Thai Fonts Built Into macOS and iOS
Apple ships a small, deliberately chosen set of Thai system fonts with macOS and iOS — Thonburi is the interface default, with Ayuthaya, Krungthep, and Silom filling the display slots. Every Mac and iPhone already has them, which makes them dependable for cross-device work but limited in weight range compared with a full commercial family. Each page below covers the weights actually shipped and what to use instead when you need more. Compare with the Windows and Office set.
4 fonts in this category. Click any entry for its full page with weights, license details, and install steps.
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Ayuthaya
Ayuthaya thai font: Apple's looped Thai system font, bundled with macOS since 2003 in a single Regular weight under Apple's software license agreement.
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Krungthep
Krungthep thai font: Apple's bold Thai display face bundled with macOS since 1992 — single Regular weight, Chicago-style Latin, macOS-only license, free alternatives.
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Silom
Silom thai font: Apple's loopless Thai display face bundled with macOS since 2003. One Regular weight, Chicago-style Latin, no free download, Apple SLA license.
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Thonburi
Thonburi font: Apple's looped Thai system font on iPhone and Mac in three weights. Why you cannot download it, and the free Thai fonts to use instead.