French Phrase
Qui est ton prof de maths ?
Meaning
The sentence asks for the identity of the person who teaches you mathematics. It is informal and used among peers, classmates, or when you’re curious about someone’s school life.
When to use
Use it in casual conversation with friends, classmates, or when you’re meeting a new student and want to know who their math teacher is. It’s not appropriate in a formal setting such as speaking to a school administrator.
✦Grammar Breakdown
Quiesttonprofdemaths?
Qui (interrogative pronoun)
Used to ask about a person’s identity; it functions as the subject of the verb.
Est (être, 3rd‑person singular)
The verb “to be” agrees with the singular subject “qui”.
Ton (possessive adjective)
Shows ownership; matches the masculine singular noun “prof”.
Prof (short for professeur)
Informal abbreviation; keep the article omitted because “ton” already indicates possession.
De (preposition)
Links the teacher to the subject they teach.
Maths (abbreviation of mathématiques)
Common colloquial term for the subject; always plural in French.
🗨In Conversation
Qui est ton prof de maths ?
Who is your math teacher?
C’est Monsieur Dupont, il est très sympa.
It’s Mr. Dupont, he’s very nice.
✕Common Mistakes
Qui est vos prof de maths ?
If you’re speaking to more than one person, use the plural “vos”.
Qui est ton prof de math ?
Avoid the Anglicism “math” – the correct French word is “maths” (short) or “mathématiques”.
Qui sont ton prof de maths ?
Do not use “sont” because the subject “qui” is singular.
↔Alternatives
Quel est le nom de ton professeur de mathématiques ?
What is the name of your mathematics teacher?
Ton prof de maths, c’est qui ?
Your math teacher, who is it?
Qui enseigne les maths chez toi ?
Who teaches math for you?
Cultural Tip
In France, “prof” is a common, informal abbreviation for “professeur”. When speaking to a teacher or in a formal context, use “professeur” instead of “prof”. Also, French schools often refer to the subject as “maths” (short for “mathématiques”), but in written French you’ll see the full word.