Thai font · COMMERCIAL

Sukhumvit Set

สุขุมวิท

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · June 13, 2026 · Updated August 5, 2026

Information verified as of August 2026

อ่านหน้า ฟอนต์ Sukhumvit Set เป็นภาษาไทย — พร้อมลิงก์ดาวน์โหลดและวิธีติดตั้ง →

What Sukhumvit Set is

Sukhumvit Set is the loopless Thai sans bundled with macOS, designed in 2012 by Anuthin Wongsunkakon of Bangkok type foundry Cadson Demak for client Apple Inc. The AGI (Alliance Graphique Internationale) record states the brief plainly: a Thai family for marketing communication, assigned to sit side by side with Myriad Pro — the Latin face Apple used across its marketing at the time.

On a Mac, Sukhumvit Set is simply there: six weights in Font Book, no purchase, no download. That convenience is also the licensing boundary — the font arrives as part of the operating system, not as a product that can be bought or moved separately. The sections below cover where it comes from and what the licence permits.

It sits on macOS alongside Apple’s other Thai faces, Thonburi, Krungthep and Silom, all bundled under the same terms.

Sukhumvit Set vs Sukhumvit Tadmai

Sukhumvit Set is the version Apple ships with the system; Sukhumvit Tadmai is the family Cadson Demak developed from the same work and sells through its own catalogue. If you are looking for a Sukhumvit you can properly licence, the answer is Tadmai, not Set.

Slanted’s record of the family states that Sukhumvit Tadmai was developed from Sukhumvit with modified glyph details and recalculated proportions for screen readability. Initial weights were released in 2013; width adjustments plus Lao and Khmer support arrived in 2021. Credited designers are Anuthin Wongsunkakon and Stawix Ruecha for Thai and Latin, Suppakit Chalermlarp for Lao, and Sovichet Tep for Khmer.

The decisive difference is range. Sukhumvit Set on macOS gives six weights. Sukhumvit Tadmai runs ten — Air, Ultra Light, Thin, Light, Text, Medium, Semi Bold, Bold, Extra Bold, Heavy — with italics throughout. For a brand system that needs both a hairline and a heavy, Tadmai is the only one of the two that gets there.

Character design and tone

Sukhumvit Set is loopless: the small circular heads that traditional Thai faces put on consonants such as ก and ถ are reduced to plain stroke ends. Typotheque records the convention clearly — in Thai typographic usage, loopless faces with bolder letterforms tended to be cast as headlines, while thinner-stroked looped faces carried long columns of body text. A loopless system default therefore reads modern to some Thai eyes and stripped-down to others.

That split played out publicly. Typotheque records that Sukhumvit was used as a new system font in a beta version of iOS 7, drew strong negative feedback from users, and Apple reverted to the previously used Thonburi. It is the clearest documented case of loopless Thai failing as small-size body text while remaining well liked in display use.

Next to Myriad Pro, the intended Latin partner, Sukhumvit Set reads as a sibling: open counters, even stroke weight, quiet geometry — exactly the side-by-side relationship the AGI brief describes.

Sukhumvit Set weights (Thin, Semibold, Bold)

macOS Sonoma lists Sukhumvit Set in six weights — Thin, Light, Text, Medium, Semi Bold, and Bold — with no italics. “Text” is the body cut; the name signals where Cadson Demak expected continuous reading to happen, rather than at a conventional Regular.

• Thin — very large sizes only; key-visual headlines, never small text
• Light — subheads and labels that want a lighter register
• Text — the intended body cut; use it wherever real paragraphs appear
• Medium — mid-weight for UI and buttons
• Semi Bold — in-line emphasis without jumping to Bold
• Bold — headlines and the family’s heaviest available emphasis

The family does not appear on Google Fonts, Adobe Fonts, or any open CDN, and Apple sells no standalone copy. A wider range means moving to Sukhumvit Tadmai or to one of the alternatives below.

Where Sukhumvit Set comes from — can it run on Windows?

Sukhumvit Set comes with the Mac. There is no separate Apple download, no licensing page, and no retail listing for this exact family. The short answer to “can I use it on Windows” is: not legitimately. The only legitimate way to design with it is to own Apple hardware running macOS, where the bundled system licence covers normal document and design work on that machine.

The trap: extracted copies of the font files circulate on free-font aggregator sites. Installing one of those on Windows, or self-hosting the family as a webfont, has no licence behind it at all — the font ships inside macOS, not under any standalone font EULA a third party can rely on.

Common situations and what actually works:

• A mixed Mac/Windows team — pick a family licensed across both from the start: licence Sukhumvit Tadmai, or use Prompt for free
• Sending files to a printer — the printer needs the font too, and has no right to Sukhumvit Set. Convert type to outlines or change the font
• Building a website — no webfont licence exists, so Windows and Android visitors fall back to another face regardless. Use an open-licensed family

Teams that need licensed loopless Thai across platforms should contact Cadson Demak, whose retail catalogue continues this design line as Sukhumvit Tadmai.

Free alternatives to Sukhumvit Set

Prompt is the honest substitute: a loopless Thai sans from the same foundry, Cadson Demak, free on Google Fonts with a full weight range and italics. Same loopless logic, open licensing that covers web embedding. If you only try one replacement, start here.

• Bai Jamjuree — cooler and slightly condensed, a good match where Sukhumvit Set would have set interface labels. OFL.
• Kanit — the heavier-duty option, loopless with sixteen styles, better for display work than quiet text. OFL.
• Noto Sans Thai — nine weights, the most neutral of the group and the safest for cross-device rendering. OFL.
• IBM Plex Thai — OFL, drawn as a matched Thai-Latin pair, useful for design systems that must hold both scripts to one tone.

All four remove the platform problem entirely: installable on Mac and Windows, embeddable on the web, shippable to anyone. Compare them on your own copy in the font tester, or browse loopless Thai fonts.

Best use cases

Sukhumvit Set fits work that is produced and consumed entirely inside the Apple ecosystem. Strong briefs:

• Keynote decks, Pages documents, and PDFs authored on macOS for Thai audiences
• UI mockups and prototypes of Apple-platform apps where the deliverable renders on a Mac
• Thai marketing comps that pair with Myriad Pro, the Latin companion the AGI record documents

Where it fails: public websites (no web licence, invisible to Windows and Android users), cross-platform brand systems, jobs that require handing font files to a supplier, and long Thai body text at small sizes — the exact reading complaint that pushed Apple back to Thonburi.

Pairings

Myriad Pro is the documented Latin partner; the AGI record says Sukhumvit Set was assigned to be used beside it. Three pairings:

• Myriad Pro — the Latin face the family was built to accompany
• Sarabun — looped open-licence body text under Sukhumvit Set display setting, matching the convention Typotheque records for long columns
• Noto Serif Thai — serif contrast for editorial layouts

See the Thai typography guide for bilingual system notes and the fonts directory for the full catalogue.

Licensing

Sukhumvit Set is commercial, bundled software: it ships inside macOS under Apple’s system licence, and Apple publishes no separate purchase, web, or redistribution route for it. It cannot be self-hosted, embedded in cross-platform products, or legitimately installed from third-party download sites.

There are two routes to licensed loopless Thai across platforms: contact Cadson Demak about licensing Sukhumvit Tadmai from its retail catalogue, or use Prompt and Bai Jamjuree under the SIL Open Font License at no cost. Apple’s macOS Sonoma font list documents the six bundled weights.

Information verified as of August 2026