---
name: locale-tt-ru
description: Use when working with the Tatar (Russia) locale (`tt-RU`) — its endonym Татар теле (Россия), Cyrillic script, left-to-right (LTR) direction, or spoken-population data. Reference data and translation guidance (register, grammar, idiom, typography) for this specific locale; see [[locale]] for general i18n/l10n concepts (BCP 47, plural rules, RTL) that apply across all locales.
---

# Locale: Tatar (Russia) (tt-RU)

Reference data for the **Tatar (Russia)** locale — endonym **Татар теле (Россия)**, written in the Cyrillic script, left-to-right (LTR).

## Identifiers

- **BCP 47 tag:** `tt-RU`
- **ISO 639-1:** `tt`
- **ISO 639-3:** `tat`
- **Script:** Cyrl (Cyrillic)
- **Region:** RU (Russia)
- **Text direction:** ltr — left-to-right (LTR)

## Speakers (approximate)

- **L1 (native):** 5,300,000
- **L2 (additional):** 1,200,000
- **L1+L2 (total):** 6,500,000

## Base locale

This is a regional variant of [[locale-tt-001]] (Tatar), the base/macro locale for this language.

## Pluralization

CLDR has no explicit plural rule defined for this language; it falls back to the root rule of a single **other** category (1 form) — every count uses the same word form, as in Japanese or Chinese.

See [[unicode-messageformat]] for writing plural messages using these categories.

## Translating into this locale

Apply [[locale-tt-001]] with the conventions of Russia (Tatarstan).

- **Context:** Tatar and Russian are both state languages of Tatarstan; many documents are bilingual. Tatar content should be complete and not a thin translation of Russian.
- **Formats:** ruble (₽); dates `17.10.2026`; 24-hour clock; decimal comma.
- **Script:** Cyrillic is the official script in Russia; do not use Latin spelling without a requirement.

## Common pitfalls

- Using Latin Tatar for Russian-based content.
- Providing Tatar that mirrors Russian syntax.
- The general pitfalls in [[locale-tt-001]] also apply.

## Learn more

- [[locale]] for BCP 47 identifiers, locale-sensitive formatting, pluralization, and text-direction concepts that apply across all locales.
- [[unicode-messageformat]] for writing plural/selection messages correctly for this locale's grammar.
- Unicode CLDR locale data for number, date, and currency formats (https://cldr.unicode.org)