Thai font · COMMERCIAL

LilyUPC

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · July 16, 2026 · Updated October 30, 2026

Information verified as of October 2026

อ่านหน้า ฟอนต์ LilyUPC เป็นภาษาไทย — พร้อมลิงก์ดาวน์โหลดและวิธีติดตั้ง →

What LilyUPC is

LilyUPC is a heavy, monoline loopless Thai sans-serif for body and interface text, designed by Unity Progress Corporation in 1992 and licensed to Microsoft, where it ships bundled with Thai editions of Windows and Office in four styles — Regular, Bold, Italic, and Bold Italic. It is one of the original UPC (Unity Progress Corporation) Thai system faces that predate the later “New” versions of Angsana, Browallia and Cordia (there is no Lily New), and it covers both the Thai and Latin scripts.

For most Thai computer users LilyUPC is not a font they chose but one they inherited: it was installed with the operating system and quietly set as a default in older documents. That makes it a compatibility face first and a design choice second — if a legacy Thai document “just renders correctly,” a UPC-family font is often why.

Character and the UPC vs New distinction

There is no Lily New: in the Windows 11 font list only Angsana, Browallia and Cordia have “New” counterparts, and Lily exists only as the four LilyUPC styles. (Windows 11 font list, accessed 30 October 2026) And unlike AngsanaUPC, CordiaUPC or IrisUPC, LilyUPC is loopless: in the font file ข บ ป ผ พ ฟ ส อ are each drawn as one outline with no head loop, the strokes are heavy and square-cornered, and its Thai consonants average only 0.38 em wide, the narrowest of all ten UPC families. Set at the same size, the 46 consonants of LilyUPC Regular put down about 40% more ink than IrisUPC Regular (measured from Upcll.ttf, version 5.05, on 30 October 2026).

As a sans-serif without loops it belongs with the loopless faces covered in our typography guide, even though it is a 1992 system font. The Latin companion is a straightforward text alphabet included so mixed Thai–English lines can be set from a single family.

Weights and availability

LilyUPC ships in four styles — Regular, Bold, Bold Italic, and Italic — and is distributed exclusively bundled with Microsoft Windows and Office, not as a separate download. It has been present in Windows from Windows XP through Windows 11, and is also available inside Office applications.

To check whether you already have it, open the font menu in Microsoft Word or your system font settings and look for “LilyUPC”. Because it is a system font, there is no legitimate free-download source — it arrives with the platform.

LilyUPC has not vanished: Microsoft moved it into Thai Supplemental Fonts alongside 13 other Thai families and calls the move a permanent change in Windows (Microsoft Learn, accessed 30 October 2026). How to switch it back on is covered on the Angsana New page; once enabled, look for LilyUPC in C:\Windows\Fonts (files Upcll.ttf, Upclb.ttf, Upcli.ttf and Upclbi.ttf).

Best use cases

LilyUPC earns its keep on compatibility and legacy Thai documents rather than new brand work. Strong fits:

• Opening, editing, and reprinting older Thai documents that specified the UPC family
• Government, academic, and office files that must render identically to their original
• Environments standardised on Microsoft Thai system fonts
• Situations that need a widely-installed, no-cost-to-the-user Thai sans-serif

For new design work, a modern licensed or open face — see the sans-serif category or Sarabun — usually serves better than a legacy system font.

Licensing

LilyUPC is a commercial font owned by Unity Progress and licensed through Microsoft; it is bundled with Microsoft products and is not free to redistribute or host as a webfont without a Microsoft licence. Confirm the terms on the Microsoft Learn typography page and the Office fonts documentation. See our Thai font licensing guide for how bundled system fonts differ from OFL and free faces.

Information verified as of October 2026