Fonts that support Turkish
Open-license families that contain every letter of the Turkish alphabet, including dotted and dotless i, across text, display and script styles.
Merhaba Istanbul
The Turkish alphabet has 29 letters, six of which do not exist in English. Five carry marks: c and s with a cedilla, g with a breve, o and u with a diaeresis. The sixth is the reason Turkish needs special attention from fonts and software alike. Turkish has two separate letters where English has one: a dotted i, whose capital also keeps its dot, and a dotless one, whose lowercase has none.
A font supports Turkish only if all of these are present, and many decorative and older fonts miss the dotted capital I, the dotless lowercase or the g with breve. The result is the familiar sight of a Turkish headline with one letter in a different typeface. Every family in this collection has the complete set according to its record.
Beyond presence, check three things. The cedilla should be attached cleanly under c and s, not a detached comma. The breve on g should not collide with the line above in tightly set capitals. And ligatures deserve a test: a font that joins f and i into one shape can swallow the dot that distinguishes the two Turkish letters, so good fonts disable that ligature for Turkish text when the language is declared.
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Poppins
Turkish letters in nine weights from Thin to Black with italics.
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Outfit
Covers the Turkish alphabet across nine weights from Thin to Black.
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Figtree
Turkish letters in seven weights with italics, in a sans made for web and mobile apps.
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Karla
Turkish letters on a weight axis from ExtraLight to ExtraBold, with italics.
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Titillium Web
A squared sans with Turkish letters, in six weights with italics.
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Heebo
Nine variable weights with Turkish letters beside Hebrew.
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Libre Baskerville
A text serif with Turkish letters, in four weights with italics.
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Instrument Serif
A condensed display serif with Turkish letters, in Regular and Italic.
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Archivo Black
A one-weight heavy headline face that includes the Turkish letters.
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Sora
A wide sans with Turkish letters, variable from Thin to ExtraBold.
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Duru Sans
A low-contrast humanist sans by Onur Yazıcıgil with the Turkish letters, in a single Regular weight.
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Zilla Slab
A slab serif with Turkish letters, in five weights from Light to Bold with italics.
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DM Serif Display
A high-contrast poster serif with Turkish letters and an italic.
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Abril Fatface
A heavy Didone display face with Turkish letters.
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Fira Code
A coding monospace with Turkish letters, in five weights.
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Lobster
A bold slanted script with Turkish letters and Cyrillic.
Samples load a basic Latin subset of each family. Every family here carries an open license; its page states the terms and offers the original files.
Questions about fonts that support Turkish
Which letters must a font have for Turkish?
Besides the basic Latin letters: c and s with cedilla, g with breve, o and u with diaeresis, the dotless lowercase i and the capital I with a dot, each in capital and lowercase form.
Why does the dot disappear on i after f in Turkish text?
The font is applying an fi ligature, and its joined shape hides the dot. Mark the text as Turkish (lang="tr" in HTML): fonts with a Turkish rule in their OpenType locl feature then leave the two letters apart. If the font has no such rule, turn the ligature off, for example with font-variant-ligatures: no-common-ligatures.
How do I get correct capital I when transforming text to uppercase?
Declare the language. With lang="tr", CSS text-transform and most software convert i to a dotted capital and the dotless letter to plain I; without it, i becomes an undotted I, which is a different Turkish letter.
Are these fonts free for commercial use?
Yes. All of them are under the SIL Open Font License, which permits commercial use, embedding and modification.