Punctuation Conventions

Turkish punctuation looks reassuringly familiar — the same period, comma, question mark, and quotation marks as English. But three areas trip up English speakers because the underlying logic is different: where commas go (Turkish puts far fewer commas inside complex sentences than you'd expect), how quotation marks pair with other punctuation (the comma or period often sits outside the closing quote), and how numbers are written (the decimal and thousands separators are swapped). Getting these right is what makes your written Turkish look native rather than translated.

The comma: clarity, not subordination

English uses the comma heavily to fence off subordinate clauses: "The book that I bought, which was expensive, is on the table." Turkish uses the comma far more sparingly, and the reason is structural. Turkish builds subordination not with finite "that/which/because" clauses but with non-finite participles and converbs — verb forms that fold the whole clause into a single phrase before the main verb. Because there is no finite subordinate clause to fence off, there is no comma. This is the single biggest difference, and it explains why a Turkish sentence with the grammatical complexity of an English three-comma sentence may contain no internal comma at all.

Notice: English needs "that I bought yesterday" set off conceptually as a relative clause, but the Turkish dün aldığım "yesterday I-bought" is a single participial phrase modifying kitap, with no comma. For how these nominalized and participial clauses are built, see non-finite/nominalized-complements.

So what does take a comma in Turkish?

1. Items in a list. Just like English, but note that the final item before ve "and" usually takes no comma (no Oxford comma).

2. After a sentence-initial subject, when it is far from its verb, to keep the reader from losing the thread. In a short sentence this comma is optional and often omitted; in a long one it is a genuine clarity aid.

3. After yes/no and discourse words like evet "yes", hayır "no", peki "okay then", yani "that is".

A short subject-initial sentence does not need the comma:

Here annem "my mother" sits right beside its predicate, so no comma. Compare it with the long Ali sentence above, where the subject and verb are separated by a whole participial phrase — that is when the comma helps.

Quotation marks and how punctuation pairs with them

Turkish uses straight or curly double quotation marks " " for direct speech and quoted material, exactly like English in appearance. The difference is placement of the surrounding punctuation: in careful Turkish writing, when you quote a fragment inside a larger sentence, the comma or period belongs to the outer sentence and sits outside the closing quotation mark — the opposite of American English convention.

When the quotation is itself a full sentence with its own final punctuation, that punctuation goes inside, and the reporting verb follows:

Turkish also uses the em dash (—) to introduce lines of dialogue in fiction, where English would use quotation marks for each speaker turn — a French/continental convention you'll see throughout Turkish novels.

Numbers: the separators are swapped

This is the rule that bites everyone, because it is silent — a number looks fine and means something else. Turkish (like most of continental Europe) uses a comma for the decimal point and a period (full stop) for the thousands separator. English does the reverse.

So 1.500,75 is "one thousand five hundred and seventy-five hundredths", not one-and-a-half. Read the comma as your decimal point.

Notice in the second example that the apostrophe still appears before the suffix on a numeral (3,14'tür), per the rule on writing/apostrophe-proper-nouns. For the full system of writing and inflecting large numbers and decimals, see numbers/decimals-and-large.

Dates use periods as separators — 15.06.2026 — and clock times use a period or colon: saat 14.30 or 14:30.

A few more conventions

The question mark is used even though Turkish marks yes/no questions with the particle mı/mi/mu/mü; the particle and the question mark coexist. The colon introduces lists and explanations as in English. Suspension points ... mark trailing-off speech. The period after a number also functions as the ordinal marker in writing: 3. means üçüncü "third" (like English "3rd").

Common mistakes

The two costliest errors are the phantom comma before participial clauses (an English habit with no Turkish basis) and the swapped number separators, which silently change amounts. Train your eye to read a comma in a number as a decimal point.

Key takeaways

• Turkish uses far fewer internal commas than English because subordination is carried by participles and converbs, not finite "that/which/because" clauses — and those take no comma.
• A comma goes after list items (no Oxford comma before ve), after a distant sentence-initial subject, and after yes/no and discourse words.
• Quotation marks look like English, but the outer sentence's comma/period sits outside the quote; reported speech often uses demek + diye.
• Numbers swap the separators: comma = decimal point, period = thousands (1.500,75 = 1,500.75). Dates use periods (15.06.2026); the period after a numeral also marks ordinals (3. = 3rd).