diff --git a/packages/core/src/locales.ts b/packages/core/src/locales.ts
index 5e0ed62a75..0adb429502 100644
--- a/packages/core/src/locales.ts
+++ b/packages/core/src/locales.ts
@@ -1,5 +1,6 @@
 import az from "./locales/az.js";
+import be from "./locales/be.js";
 import en from "./locales/en.js";
 import es from "./locales/es.js";
 
-export { az, es, en };
+export { az, es, en, be };
diff --git a/packages/core/src/locales/be.ts b/packages/core/src/locales/be.ts
new file mode 100644
index 0000000000..9cde4fa8d9
--- /dev/null
+++ b/packages/core/src/locales/be.ts
@@ -0,0 +1,124 @@
+import type { $ZodStringFormats } from "../checks.js";
+import type * as errors from "../errors.js";
+import * as util from "../util.js";
+
+const Sizable: Record<string, { unit: string; verb: string }> = {
+  string: { unit: "сімвалаў", verb: "мець" },
+  file: { unit: "байтаў", verb: "мець" },
+  array: { unit: "элементаў", verb: "мець" },
+  set: { unit: "элементаў", verb: "мець" },
+};
+
+function getSizing(origin: string): { unit: string; verb: string } | null {
+  return Sizable[origin] ?? null;
+}
+
+export const parsedType = (data: any): string => {
+  const t = typeof data;
+
+  switch (t) {
+    case "number": {
+      return Number.isNaN(data) ? "NaN" : "лік";
+    }
+    case "object": {
+      if (Array.isArray(data)) {
+        return "масіў";
+      }
+      if (data === null) {
+        return "null";
+      }
+
+      if (Object.getPrototypeOf(data) !== Object.prototype && data.constructor) {
+        return data.constructor.name;
+      }
+    }
+  }
+  return t;
+};
+
+const Nouns: {
+  [k in $ZodStringFormats | (string & {})]?: string;
+} = {
+  regex: "увод",
+  email: "электронны адрас",
+  url: "URL",
+  emoji: "эмодзі",
+  uuid: "UUID",
+  uuidv4: "UUIDv4",
+  uuidv6: "UUIDv6",
+  nanoid: "nanoid",
+  guid: "GUID",
+  cuid: "cuid",
+  cuid2: "cuid2",
+  ulid: "ULID",
+  xid: "XID",
+  ksuid: "KSUID",
+  datetime: "ISO дата і час",
+  date: "ISO дата",
+  time: "ISO час",
+  duration: "ISO працягласць",
+  ipv4: "IPv4 адрас",
+  ipv6: "IPv6 адрас",
+  cidrv4: "IPv4 дыяпазон",
+  cidrv6: "IPv6 дыяпазон",
+  base64: "радок у кадзіроўцы base64",
+  base64url: "радок у кадзіроўцы base64url",
+  json_string: "JSON радок",
+  e164: "нумар E.164",
+  jwt: "JWT",
+  template_literal: "увод",
+};
+
+const error: errors.$ZodErrorMap = (issue) => {
+  switch (issue.code) {
+    case "invalid_type":
+      return `Няправільны ўвод: чакаўся ${issue.expected}, атрымана ${parsedType(issue.input)}`;
+    case "invalid_value":
+      if (issue.values.length === 1) return `Няправільны ўвод: чакалася ${util.stringifyPrimitive(issue.values[0])}`;
+      return `Няправільны варыянт: чакаўся адзін з ${util.joinValues(issue.values, "|")}`;
+    case "too_big": {
+      const adj = issue.inclusive ? "<=" : "<";
+      const sizing = getSizing(issue.origin);
+      if (sizing)
+        return `Занадта вялікі: чакалася, што ${issue.origin ?? "значэнне"} будзе мець ${adj}${issue.maximum.toString()} ${sizing.unit ?? "элементаў"}`;
+      return `Занадта вялікі: чакалася, што ${issue.origin ?? "значэнне"} будзе ${adj}${issue.maximum.toString()}`;
+    }
+    case "too_small": {
+      const adj = issue.inclusive ? ">=" : ">";
+      const sizing = getSizing(issue.origin);
+      if (sizing) {
+        return `Занадта малы: чакалася, што ${issue.origin} будзе мець ${adj}${issue.minimum.toString()} ${sizing.unit}`;
+      }
+
+      return `Занадта малы: чакалася, што ${issue.origin} будзе ${adj}${issue.minimum.toString()}`;
+    }
+    case "invalid_format": {
+      const _issue = issue as errors.$ZodStringFormatIssues;
+      if (_issue.format === "starts_with") return `Няправільны радок: павінен пачынацца з "${issue}"`;
+      if (_issue.format === "ends_with") return `Няправільны радок: павінен заканчвацца на "${_issue.suffix}"`;
+      if (_issue.format === "includes") return `Няправільны радок: павінен уключаць "${_issue.includes}"`;
+      if (_issue.format === "regex") return `Няправільны радок: павінен адпавядаць шаблону ${_issue.pattern}`;
+      return `Няправільны ${Nouns[_issue.format] ?? issue.format}`;
+    }
+    case "not_multiple_of":
+      return `Няправільны лік: павінен быць кратным ${issue.divisor}`;
+    case "unrecognized_keys":
+      return `Нераспазнаны ключ${issue.keys.length > 1 ? "ы" : ""}: ${util.joinValues(issue.keys, ", ")}`;
+    case "invalid_key":
+      return `Няправільны ключ у ${issue.origin}`;
+    case "invalid_union":
+      return "Няправільны ўвод";
+    case "invalid_element":
+      return `Няправільнае значэнне ў ${issue.origin}`;
+    default:
+      return `Няправільны ўвод`;
+  }
+};
+
+export { error };
+
+export default function (): { localeError: errors.$ZodErrorMap } {
+  return {
+    localeError: error,
+  };
+}
diff --git a/packages/docs/content/error-customization.mdx b/packages/docs/content/error-customization.mdx
index 8a0003d20f..772f217df5 100644
--- a/packages/docs/content/error-customization.mdx
+++ b/packages/docs/content/error-customization.mdx
@@ -8,9 +8,9 @@ import { Tabs, Tab } from 'fumadocs-ui/components/tabs';
 
 In Zod, validation errors are surfaced as instances of the `z.core.$ZodError` class.
 
-> The `zod` package uses a subclass of this called `ZodError` that implements some additional convenience methods. 
+> The `zod` package uses a subclass of this called `ZodError` that implements some additional convenience methods.
 
-Instances of `$ZodError` contain an `.issues` property containing a human-readable `message` and additional structured information about each encountered validation issue. 
+Instances of `$ZodError` contain an `.issues` property containing a human-readable `message` and additional structured information about each encountered validation issue.
 
 
 <Tabs groupId="lib" items={["zod", "@zod/mini"]}>
@@ -81,7 +81,7 @@ z.string({ error: "Bad!"}).parse(12);
 //       expected: 'string',
 //       code: 'invalid_type',
 //       path: [],
-//       message: 'Bad!'   <-- 👀 custom error message 
+//       message: 'Bad!'   <-- 👀 custom error message
 //     }
 //   ]
 // }
@@ -238,7 +238,7 @@ result.error.issues;
 // [{ message: "highest priority", ... }]
 ```
 
-The `iss` object is a [discriminated union](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions) of all possible issue types. Use the `code` property to discriminate between them. 
+The `iss` object is a [discriminated union](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions) of all possible issue types. Use the `code` property to discriminate between them.
 
 > For a breakdown of all Zod issue codes, see the [`@zod/core`](/packages/core#issue-types) documentation.
 
@@ -269,7 +269,7 @@ z.config({
 });
 ```
 
-Global error messages have *lower precedence* than schema-level or per-parse error messages. 
+Global error messages have *lower precedence* than schema-level or per-parse error messages.
 
 The `iss` object is a [discriminated union](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions) of all possible issue types. Use the `code` property to discriminate between them.
 
@@ -340,3 +340,4 @@ The following locales are available:
 
 - `az` — Azerbaijani
 - `en` — English
+- `be` — Belarusian