diff --git a/package-lock.json b/package-lock.json
index 40cba11e..732200ab 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2997,6 +2997,14 @@
       "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
       "integrity": "sha1-MasayLEpNjRj41s+u2n038+6eUc="
     },
+    "backoff": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/backoff/-/backoff-2.5.0.tgz",
+      "integrity": "sha1-9hbtqdPktmuMp/ynn2lXIsX44m8=",
+      "requires": {
+        "precond": "0.2"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -3302,6 +3310,17 @@
       "resolved": "https://registry.npmjs.org/buffer-writer/-/buffer-writer-2.0.0.tgz",
       "integrity": "sha512-a7ZpuTZU1TRtnwyCNW3I5dc0wWNC3VR9S++Ewyk2HHZdrO3CQJqSpd+95Us590V6AL7JqUAH2IwZ/398PmNFgw=="
     },
+    "bunyan": {
+      "version": "1.8.12",
+      "resolved": "https://registry.npmjs.org/bunyan/-/bunyan-1.8.12.tgz",
+      "integrity": "sha1-8VDw9nSKvdcq6uhPBEA74u8RN5c=",
+      "requires": {
+        "dtrace-provider": "~0.8",
+        "moment": "^2.10.6",
+        "mv": "~2",
+        "safe-json-stringify": "~1"
+      }
+    },
     "busboy": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/busboy/-/busboy-0.3.1.tgz",
@@ -4463,6 +4482,23 @@
         }
       }
     },
+    "dtrace-provider": {
+      "version": "0.8.8",
+      "resolved": "https://registry.npmjs.org/dtrace-provider/-/dtrace-provider-0.8.8.tgz",
+      "integrity": "sha512-b7Z7cNtHPhH9EJhNNbbeqTcXB8LGFFZhq1PGgEvpeHlzd36bhbdTWoE/Ba/YguqpBSlAPKnARWhVlhunCMwfxg==",
+      "optional": true,
+      "requires": {
+        "nan": "^2.14.0"
+      },
+      "dependencies": {
+        "nan": {
+          "version": "2.14.0",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
+          "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==",
+          "optional": true
+        }
+      }
+    },
     "duplexer3": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer3/-/duplexer3-0.1.4.tgz",
@@ -7769,6 +7805,45 @@
       "resolved": "https://registry.npmjs.org/lcov-parse/-/lcov-parse-0.0.10.tgz",
       "integrity": "sha1-GwuP+ayceIklBYK3C3ExXZ2m2aM="
     },
+    "ldap-filter": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/ldap-filter/-/ldap-filter-0.2.2.tgz",
+      "integrity": "sha1-8rhCvguG2jNSeYUFsx68rlkNd9A=",
+      "requires": {
+        "assert-plus": "0.1.5"
+      },
+      "dependencies": {
+        "assert-plus": {
+          "version": "0.1.5",
+          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.1.5.tgz",
+          "integrity": "sha1-7nQAlBMALYTOxyGcasgRgS5yMWA="
+        }
+      }
+    },
+    "ldapjs": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/ldapjs/-/ldapjs-1.0.2.tgz",
+      "integrity": "sha1-VE/3Ayt7g8aPBwEyjZKXqmlDQPk=",
+      "requires": {
+        "asn1": "0.2.3",
+        "assert-plus": "^1.0.0",
+        "backoff": "^2.5.0",
+        "bunyan": "^1.8.3",
+        "dashdash": "^1.14.0",
+        "dtrace-provider": "~0.8",
+        "ldap-filter": "0.2.2",
+        "once": "^1.4.0",
+        "vasync": "^1.6.4",
+        "verror": "^1.8.1"
+      },
+      "dependencies": {
+        "asn1": {
+          "version": "0.2.3",
+          "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
+          "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y="
+        }
+      }
+    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -9043,6 +9118,41 @@
       "integrity": "sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==",
       "dev": true
     },
+    "mv": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/mv/-/mv-2.1.1.tgz",
+      "integrity": "sha1-rmzg1vbV4KT32JN5jQPB6pVZtqI=",
+      "optional": true,
+      "requires": {
+        "mkdirp": "~0.5.1",
+        "ncp": "~2.0.0",
+        "rimraf": "~2.4.0"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "6.0.4",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-6.0.4.tgz",
+          "integrity": "sha1-DwiGD2oVUSey+t1PnOJLGqtuTSI=",
+          "optional": true,
+          "requires": {
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "2 || 3",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        },
+        "rimraf": {
+          "version": "2.4.5",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.4.5.tgz",
+          "integrity": "sha1-7nEM5dk6j9uFb7Xqj/Di11k0sto=",
+          "optional": true,
+          "requires": {
+            "glob": "^6.0.1"
+          }
+        }
+      }
+    },
     "nan": {
       "version": "2.14.0",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
@@ -9076,6 +9186,12 @@
       "integrity": "sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=",
       "dev": true
     },
+    "ncp": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ncp/-/ncp-2.0.0.tgz",
+      "integrity": "sha1-GVoh1sRuNh0vsSgbo4uR6d9727M=",
+      "optional": true
+    },
     "needle": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/needle/-/needle-2.4.0.tgz",
@@ -9989,6 +10105,11 @@
         "xtend": "^4.0.0"
       }
     },
+    "precond": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/precond/-/precond-0.2.3.tgz",
+      "integrity": "sha1-qpWRvKokkj8eD0hJ0kD0fvwQdaw="
+    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
@@ -10587,6 +10708,12 @@
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
       "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
     },
+    "safe-json-stringify": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/safe-json-stringify/-/safe-json-stringify-1.2.0.tgz",
+      "integrity": "sha512-gH8eh2nZudPQO6TytOvbxnuhYBOvDBBLW52tz5q6X58lJcd/tkmqFR+5Z9adS8aJtURSXWThWy/xJtJwixErvg==",
+      "optional": true
+    },
     "safe-regex": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz",
@@ -11954,6 +12081,29 @@
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
     },
+    "vasync": {
+      "version": "1.6.4",
+      "resolved": "https://registry.npmjs.org/vasync/-/vasync-1.6.4.tgz",
+      "integrity": "sha1-3+k2Fq0OeugBszKp2Iv8XNyOHR8=",
+      "requires": {
+        "verror": "1.6.0"
+      },
+      "dependencies": {
+        "extsprintf": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.2.0.tgz",
+          "integrity": "sha1-WtlGwi9bMrp/jNdCZxHG6KP8JSk="
+        },
+        "verror": {
+          "version": "1.6.0",
+          "resolved": "https://registry.npmjs.org/verror/-/verror-1.6.0.tgz",
+          "integrity": "sha1-fROyex+swuLakEBetepuW90lLqU=",
+          "requires": {
+            "extsprintf": "1.2.0"
+          }
+        }
+      }
+    },
     "verror": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
diff --git a/package.json b/package.json
index 7c51f2dd..60e7cd79 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "graphql-upload": "8.1.0",
     "intersect": "1.0.1",
     "jsonwebtoken": "8.5.1",
+    "ldapjs": "1.0.2",
     "lodash": "4.17.15",
     "lru-cache": "5.1.1",
     "mime": "2.4.4",
diff --git a/spec/LdapAuth.spec.js b/spec/LdapAuth.spec.js
new file mode 100644
index 00000000..321d8de1
--- /dev/null
+++ b/spec/LdapAuth.spec.js
@@ -0,0 +1,138 @@
+const ldap = require('../lib/Adapters/Auth/ldap');
+const mockLdapServer = require('./MockLdapServer');
+const port = 12345;
+
+it('Should fail with missing options', done => {
+  ldap
+    .validateAuthData({ id: 'testuser', password: 'testpw' })
+    .then(done.fail)
+    .catch(err => {
+      jequal(err.message, 'LDAP auth configuration missing');
+      done();
+    });
+});
+
+it('Should return a resolved promise when validating the app id', done => {
+  ldap
+    .validateAppId()
+    .then(done)
+    .catch(done.fail);
+});
+
+it('Should succeed with right credentials', done => {
+  mockLdapServer(port, 'uid=testuser, o=example').then(server => {
+    const options = {
+      suffix: 'o=example',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+    };
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'secret' }, options)
+      .then(done)
+      .catch(done.fail)
+      .finally(() => server.close());
+  });
+});
+
+it('Should fail with wrong credentials', done => {
+  mockLdapServer(port, 'uid=testuser, o=example').then(server => {
+    const options = {
+      suffix: 'o=example',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+    };
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'wrong!' }, options)
+      .then(done.fail)
+      .catch(err => {
+        jequal(err.message, 'LDAP: Wrong username or password');
+        done();
+      })
+      .finally(() => server.close());
+  });
+});
+
+it('Should succeed if user is in given group', done => {
+  mockLdapServer(port, 'uid=testuser, o=example').then(server => {
+    const options = {
+      suffix: 'o=example',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+      groupCn: 'powerusers',
+      groupFilter:
+        '(&(uniqueMember=uid={{id}}, o=example)(objectClass=groupOfUniqueNames))',
+    };
+
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'secret' }, options)
+      .then(done)
+      .catch(done.fail)
+      .finally(() => server.close());
+  });
+});
+
+it('Should fail if user is not in given group', done => {
+  mockLdapServer(port, 'uid=testuser, o=example').then(server => {
+    const options = {
+      suffix: 'o=example',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+      groupCn: 'groupTheUserIsNotIn',
+      groupFilter:
+        '(&(uniqueMember=uid={{id}}, o=example)(objectClass=groupOfUniqueNames))',
+    };
+
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'secret' }, options)
+      .then(done.fail)
+      .catch(err => {
+        jequal(err.message, 'LDAP: User not in group');
+        done();
+      })
+      .finally(() => server.close());
+  });
+});
+
+it('Should fail if the LDAP server does not allow searching inside the provided suffix', done => {
+  mockLdapServer(port, 'uid=testuser, o=example').then(server => {
+    const options = {
+      suffix: 'o=invalid',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+      groupCn: 'powerusers',
+      groupFilter:
+        '(&(uniqueMember=uid={{id}}, o=example)(objectClass=groupOfUniqueNames))',
+    };
+
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'secret' }, options)
+      .then(done.fail)
+      .catch(err => {
+        jequal(err.message, 'LDAP group search failed');
+        done();
+      })
+      .finally(() => server.close());
+  });
+});
+
+it('Should fail if the LDAP server encounters an error while searching', done => {
+  mockLdapServer(port, 'uid=testuser, o=example', true).then(server => {
+    const options = {
+      suffix: 'o=example',
+      url: `ldap://localhost:${port}`,
+      dn: 'uid={{id}}, o=example',
+      groupCn: 'powerusers',
+      groupFilter:
+        '(&(uniqueMember=uid={{id}}, o=example)(objectClass=groupOfUniqueNames))',
+    };
+
+    ldap
+      .validateAuthData({ id: 'testuser', password: 'secret' }, options)
+      .then(done.fail)
+      .catch(err => {
+        jequal(err.message, 'LDAP group search failed');
+        done();
+      })
+      .finally(() => server.close());
+  });
+});
diff --git a/spec/MockLdapServer.js b/spec/MockLdapServer.js
new file mode 100644
index 00000000..aa8a7673
--- /dev/null
+++ b/spec/MockLdapServer.js
@@ -0,0 +1,48 @@
+const ldapjs = require('ldapjs');
+
+function newServer(port, dn, provokeSearchError = false) {
+  const server = ldapjs.createServer();
+
+  server.bind('o=example', function(req, res, next) {
+    if (req.dn.toString() !== dn || req.credentials !== 'secret')
+      return next(new ldapjs.InvalidCredentialsError());
+    res.end();
+    return next();
+  });
+
+  server.search('o=example', function(req, res, next) {
+    if (provokeSearchError) {
+      res.end(ldapjs.LDAP_SIZE_LIMIT_EXCEEDED);
+      return next(new ldapjs.NoSuchObjectError('fake error'));
+    }
+    const obj = {
+      dn: req.dn.toString(),
+      attributes: {
+        objectclass: ['organization', 'top'],
+        o: 'example',
+      },
+    };
+
+    const group = {
+      dn: req.dn.toString(),
+      attributes: {
+        objectClass: ['groupOfUniqueNames', 'top'],
+        uniqueMember: ['uid=testuser, o=example'],
+        cn: 'powerusers',
+        ou: 'powerusers',
+      },
+    };
+
+    if (req.filter.matches(obj.attributes)) {
+      res.send(obj);
+    }
+
+    if (req.filter.matches(group.attributes)) {
+      res.send(group);
+    }
+    res.end();
+  });
+  return new Promise(resolve => server.listen(port, () => resolve(server)));
+}
+
+module.exports = newServer;
diff --git a/src/Adapters/Auth/index.js b/src/Adapters/Auth/index.js
index 07c956ce..e5e8c955 100755
--- a/src/Adapters/Auth/index.js
+++ b/src/Adapters/Auth/index.js
@@ -23,6 +23,7 @@ const weibo = require('./weibo');
 const oauth2 = require('./oauth2');
 const phantauth = require('./phantauth');
 const microsoft = require('./microsoft');
+const ldap = require('./ldap');
 
 const anonymous = {
   validateAuthData: () => {
@@ -57,6 +58,7 @@ const providers = {
   weibo,
   phantauth,
   microsoft,
+  ldap,
 };
 
 function authDataValidator(adapter, appIds, options) {
diff --git a/src/Adapters/Auth/ldap.js b/src/Adapters/Auth/ldap.js
new file mode 100644
index 00000000..5b3c3a05
--- /dev/null
+++ b/src/Adapters/Auth/ldap.js
@@ -0,0 +1,113 @@
+const ldapjs = require('ldapjs');
+const Parse = require('parse/node').Parse;
+
+function validateAuthData(authData, options) {
+  if (!optionsAreValid(options)) {
+    return new Promise((_, reject) => {
+      reject(
+        new Parse.Error(
+          Parse.Error.INTERNAL_SERVER_ERROR,
+          'LDAP auth configuration missing'
+        )
+      );
+    });
+  }
+
+  const client = ldapjs.createClient({ url: options.url });
+  const userCn =
+    typeof options.dn === 'string'
+      ? options.dn.replace('{{id}}', authData.id)
+      : `uid=${authData.id},${options.suffix}`;
+
+  return new Promise((resolve, reject) => {
+    client.bind(userCn, authData.password, err => {
+      if (err) {
+        client.destroy(err);
+        return reject(
+          new Parse.Error(
+            Parse.Error.OBJECT_NOT_FOUND,
+            'LDAP: Wrong username or password'
+          )
+        );
+      }
+
+      if (
+        typeof options.groupCn === 'string' &&
+        typeof options.groupFilter === 'string'
+      ) {
+        searchForGroup(client, options, authData.id, resolve, reject);
+      } else {
+        client.unbind();
+        client.destroy();
+        resolve();
+      }
+    });
+  });
+}
+
+function optionsAreValid(options) {
+  return (
+    typeof options === 'object' &&
+    typeof options.suffix === 'string' &&
+    typeof options.url === 'string' &&
+    options.url.startsWith('ldap://')
+  );
+}
+
+function searchForGroup(client, options, id, resolve, reject) {
+  const filter = options.groupFilter.replace(/{{id}}/gi, id);
+  const opts = {
+    scope: 'sub',
+    filter: filter,
+  };
+  let found = false;
+  client.search(options.suffix, opts, (searchError, res) => {
+    if (searchError) {
+      client.unbind();
+      client.destroy();
+      return reject(
+        new Parse.Error(
+          Parse.Error.INTERNAL_SERVER_ERROR,
+          'LDAP group search failed'
+        )
+      );
+    }
+    res.on('searchEntry', entry => {
+      if (entry.object.cn === options.groupCn) {
+        found = true;
+        client.unbind();
+        client.destroy();
+        return resolve();
+      }
+    });
+    res.on('end', () => {
+      if (!found) {
+        client.unbind();
+        client.destroy();
+        return reject(
+          new Parse.Error(
+            Parse.Error.INTERNAL_SERVER_ERROR,
+            'LDAP: User not in group'
+          )
+        );
+      }
+    });
+    res.on('error', () => {
+      return reject(
+        new Parse.Error(
+          Parse.Error.INTERNAL_SERVER_ERROR,
+          'LDAP group search failed'
+        )
+      );
+    });
+  });
+}
+
+function validateAppId() {
+  return Promise.resolve();
+}
+
+module.exports = {
+  validateAppId,
+  validateAuthData,
+};