diff --git a/backend/api/routes/quotes.js b/backend/api/routes/quotes.js
index 93eb1d828..d5e18b984 100644
--- a/backend/api/routes/quotes.js
+++ b/backend/api/routes/quotes.js
@@ -1,8 +1,11 @@
+const joi = require("joi");
 const { authenticateRequest } = require("../../middlewares/auth");
 const { Router } = require("express");
 const NewQuotesController = require("../controllers/new-quotes");
 const QuoteRatingsController = require("../controllers/quote-ratings");
 const RateLimit = require("../../middlewares/rate-limit");
+const { requestValidation } = require("../../middlewares/apiUtils");
+const SUPPORTED_QUOTE_LANGUAGES = require("../../constants/quoteLanguages");
 
 const quotesRouter = Router();
 
@@ -48,4 +51,31 @@ quotesRouter.post(
   QuoteRatingsController.submitRating
 );
 
+quotesRouter.post(
+  "/report",
+  RateLimit.quoteReportSubmit,
+  authenticateRequest,
+  requestValidation({
+    body: {
+      quoteId: joi.string().required(),
+      quoteLanguage: joi
+        .string()
+        .valid(...SUPPORTED_QUOTE_LANGUAGES)
+        .required(),
+      reason: joi
+        .string()
+        .valid(
+          "Grammatical error",
+          "Inappropriate content",
+          "Low quality content"
+        )
+        .required(),
+      comment: joi.string().allow("").max(250).required(),
+    },
+  }),
+  (req, res) => {
+    res.sendStatus(200);
+  }
+);
+
 module.exports = quotesRouter;
diff --git a/backend/constants/quoteLanguages.js b/backend/constants/quoteLanguages.js
new file mode 100644
index 000000000..afb7cedec
--- /dev/null
+++ b/backend/constants/quoteLanguages.js
@@ -0,0 +1,37 @@
+const SUPPORTED_QUOTE_LANGUAGES = [
+  "albanian",
+  "arabic",
+  "code_c++",
+  "code_c",
+  "code_java",
+  "code_javascript",
+  "code_python",
+  "code_rust",
+  "czech",
+  "danish",
+  "dutch",
+  "english",
+  "filipino",
+  "french",
+  "german",
+  "hindi",
+  "icelandic",
+  "indonesian",
+  "irish",
+  "italian",
+  "lithuanian",
+  "malagasy",
+  "polish",
+  "portuguese",
+  "russian",
+  "serbian",
+  "slovak",
+  "spanish",
+  "swedish",
+  "thai",
+  "toki_pona",
+  "turkish",
+  "vietnamese",
+];
+
+module.exports = SUPPORTED_QUOTE_LANGUAGES;
diff --git a/backend/middlewares/apiUtils.js b/backend/middlewares/apiUtils.js
new file mode 100644
index 000000000..f8aaaa91d
--- /dev/null
+++ b/backend/middlewares/apiUtils.js
@@ -0,0 +1,32 @@
+const joi = require("joi");
+const MonkeyError = require("../handlers/error");
+
+function requestValidation(validationSchema) {
+  return (req, res, next) => {
+    // In dev environments, as an alternative to token authentication,
+    // you can pass the authentication middleware by having a user id in the body.
+    // Inject the user id into the schema so that validation will not fail.
+    if (process.env.MODE === "dev") {
+      validationSchema.body = {
+        uid: joi.any(),
+        ...(validationSchema.body ?? {}),
+      };
+    }
+
+    Object.keys(validationSchema).forEach((key) => {
+      const schema = validationSchema[key];
+      const joiSchema = joi.object().keys(schema);
+      const { error } = joiSchema.validate(req[key] ?? {});
+      if (error) {
+        const errorMessage = error.details[0].message;
+        throw new MonkeyError(400, `Invalid request: ${errorMessage}`);
+      }
+    });
+
+    next();
+  };
+}
+
+module.exports = {
+  requestValidation,
+};
diff --git a/backend/middlewares/rate-limit.js b/backend/middlewares/rate-limit.js
index 9559695a1..34d210532 100644
--- a/backend/middlewares/rate-limit.js
+++ b/backend/middlewares/rate-limit.js
@@ -68,6 +68,14 @@ exports.quoteRatingsSubmit = rateLimit({
   keyGenerator: getAddress,
 });
 
+// Quote reporting
+exports.quoteReportSubmit = rateLimit({
+  windowMs: 30 * 60 * 1000, // 30 min
+  max: 50 * multiplier,
+  message,
+  keyGenerator: getAddress,
+});
+
 // Presets Routing
 exports.presetsGet = rateLimit({
   windowMs: 60 * 60 * 1000, // 60 min
diff --git a/package-lock.json b/package-lock.json
index 78c24d459..9347d6c85 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1735,6 +1735,19 @@
         }
       }
     },
+    "@hapi/hoek": {
+      "version": "9.2.1",
+      "resolved": "https://registry.npmjs.org/@hapi/hoek/-/hoek-9.2.1.tgz",
+      "integrity": "sha512-gfta+H8aziZsm8pZa0vj04KO6biEiisppNgA1kbJvFrrWu9Vm7eaUEy76DIxsuTaWvti5fkJVhllWc6ZTE+Mdw=="
+    },
+    "@hapi/topo": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@hapi/topo/-/topo-5.1.0.tgz",
+      "integrity": "sha512-foQZKJig7Ob0BMAYBfcJk8d77QtOe7Wo4ox7ff1lQYoNNAb6jwcY1ncdoy2e9wQZzvNy7ODZCYJkK8kzmcAnAg==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
     "@humanwhocodes/config-array": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.5.0.tgz",
@@ -2005,6 +2018,24 @@
       "integrity": "sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA=",
       "optional": true
     },
+    "@sideway/address": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/@sideway/address/-/address-4.1.3.tgz",
+      "integrity": "sha512-8ncEUtmnTsMmL7z1YPB47kPUq7LpKWJNFPsRzHiIajGC5uXlWGn+AmkYPcHNl8S4tcEGx+cnORnNYaw2wvL+LQ==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0"
+      }
+    },
+    "@sideway/formula": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/@sideway/formula/-/formula-3.0.0.tgz",
+      "integrity": "sha512-vHe7wZ4NOXVfkoRb8T5otiENVlT7a3IAiw7H5M2+GO+9CDgcVUUsX1zalAztCmwyOr2RUTGJdgB+ZvSVqmdHmg=="
+    },
+    "@sideway/pinpoint": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@sideway/pinpoint/-/pinpoint-2.0.0.tgz",
+      "integrity": "sha512-RNiOoTPkptFtSVzQevY/yWtZwf/RxyVnPy/OcA9HBM3MlGDnBEYL5B41H0MTn0Uec8Hi+2qUtTfG2WWZBmMejQ=="
+    },
     "@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
@@ -7813,6 +7844,18 @@
       "integrity": "sha512-qjdpeo2yKlYTH7nFdK0vbZWuTCesk4o63v5iVOlhMQPfuIZQfW/HI35SjfhA+4qpg36rnFSvUK5b1m+ckIblQQ==",
       "dev": true
     },
+    "joi": {
+      "version": "17.6.0",
+      "resolved": "https://registry.npmjs.org/joi/-/joi-17.6.0.tgz",
+      "integrity": "sha512-OX5dG6DTbcr/kbMFj0KGYxuew69HPcAE3K/sZpEV2nP6e/j/C0HV+HNiBPCASxdx5T7DMoa0s8UeHWMnb6n2zw==",
+      "requires": {
+        "@hapi/hoek": "^9.0.0",
+        "@hapi/topo": "^5.0.0",
+        "@sideway/address": "^4.1.3",
+        "@sideway/formula": "^3.0.0",
+        "@sideway/pinpoint": "^2.0.0"
+      }
+    },
     "jose": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/jose/-/jose-2.0.5.tgz",
diff --git a/package.json b/package.json
index a71394175..3021ee395 100644
--- a/package.json
+++ b/package.json
@@ -62,6 +62,7 @@
     "gulp-replace": "^1.1.3",
     "helmet": "^4.6.0",
     "howler": "^2.2.1",
+    "joi": "^17.6.0",
     "moment-timezone": "^0.5.33",
     "mongodb": "^3.6.9",
     "node-fetch": "^2.6.7",