Thai font · COMMERCIAL

Ayuthaya

อยุธยา

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · July 4, 2026

Information verified as of July 2026

What Ayuthaya is

Ayuthaya is Apple’s looped Thai system font, bundled with the Mac since Mac OS X 10.3 Panther in 2003 and still listed on Apple’s Developer System Fonts page today (version 13.0d1e7) as both a macOS system font and an iOS downloadable font. It ships in a single Regular style and is named after the old Siamese capital, อยุธยา (Ayutthaya).

Ayuthaya is one of five Thai fonts Apple has shipped with its operating systems, documented by Thaifaces alongside Krungthep, Sathu, Silom, and Thonburi. Thaifaces dates its release to B.E. 2546 (2003) and credits the work to Apple’s Singapore office — no individual designer is credited anywhere in Apple’s records.

The design is older than its 2003 release date suggests. The TrueType file carries the copyright string “Copyright (c) 1992-2011 by Apple Inc. All rights reserved.”, and Luc Devroye’s Thai typography index dates it as an Apple system font for Thai created in 1992 — placing its origins in Apple’s early-1990s Thai language support. For context on how looped Thai letterforms differ from the loopless styles that dominate today’s web, see the Thai typography guide.

Character design and tone

Ayuthaya is a looped (มีหัวขมวด) Thai typeface that Thaifaces classifies as suitable for both body text and display use. Consonants carry the traditional loop terminals that Thai readers associate with maximum legibility, which is why it works at paragraph sizes as well as headings.

A telling third-party endorsement of its rendering behaviour: when Mozilla debated Firefox’s default Thai fonts for Mac OS X in Bugzilla bug 284265, it chose Thonburi as the default proportional Thai font and Ayuthaya as the default monospace Thai font. That monospace assignment made Ayuthaya the face Mac users saw in Thai plain-text and code-adjacent contexts in Firefox for years.

Ayuthaya is also genuinely multi-script. Version 10.4d5e1 contains 909 characters covering Basic Latin, Latin-1 Supplement, Latin Extended-A/B, Greek, Cyrillic, and Thai, so it can set mixed Thai-Latin text without falling back to another font.

Weights and availability

Ayuthaya ships in exactly one weight — Regular — with no bold, italic, or extended family. It comes pre-installed on macOS (since Mac OS X 10.3 Panther) and is available as a downloadable font on iOS, per Apple’s Developer System Fonts listing.

There is no legal standalone download. Ayuthaya is distributed only as part of Apple’s operating systems, so availability means “already on the reader’s Apple device” — you cannot self-host it as a webfont or bundle it with an app. If you need a multi-weight looped Thai family you can actually deploy anywhere, Sarabun is the open-license workhorse.

Best use cases

Ayuthaya makes sense where the audience is on Apple hardware and a single looped Regular weight is enough. Sensible briefs:

• Thai text in native macOS and iOS documents, presentations, and UI mockups
• Font stacks targeting Apple devices, where Ayuthaya is a reliable pre-installed Thai fallback
• Monospace-adjacent Thai plain-text contexts on the Mac — the role Mozilla assigned it in Firefox
• Quick Thai comps and print pieces produced entirely on a Mac, with no licensing purchase

Where it doesn’t fit: any project that needs weight range, webfont hosting, or cross-platform consistency. For those, use open-license Thai families — Sarabun for looped body text, Kanit or Prompt for loopless display and UI — all deployable without Apple’s SLA constraints. Browse the full Thai font library for more.

Pairings

With only one weight, Ayuthaya needs a partner family to build hierarchy. Three pairings that work:

• Sarabun — open-licensed looped Thai sans with a full weight range; use its Bold for headings over Ayuthaya body text on Mac-only work
• Kanit — geometric loopless Thai sans for display contrast against Ayuthaya’s traditional looped body
• Sukhumvit Set — Apple’s other bundled Thai family; pairing the two keeps a project entirely within fonts already installed on Apple devices

Licensing

Ayuthaya is proprietary Apple software: it is free to use on Apple devices under Apple’s Software License Agreement, but it is not free software. Thaifaces notes it is free to use under Apple’s SLA; the operative constraint is that the license travels with the operating system, not with you. No webfont hosting, no redistribution, no bundling into products — the Apple SLA governs all use.

For projects that need a looped Thai face under a genuinely open license, Sarabun is the closest free alternative in spirit and role; Kanit and Prompt cover the loopless display end. All three are deployable on any platform without touching Apple’s terms.

Information verified as of July 2026