How do you say-Can I have a pencil in French?

There are a couple of ways to say "Can I have a pencil" in French, depending on the level of formality you want:

Formal:

* Pourriez-vous me donner un crayon, s'il vous plaît? (Could you please give me a pencil?)

* Je voudrais un crayon, s'il vous plaît. (I would like a pencil, please.)

Informal:

* Tu peux me passer un crayon? (Can you pass me a pencil?)

* Je peux avoir un crayon? (Can I have a pencil?)

* Donne-moi un crayon? (Give me a pencil?)

The most common and natural way to ask for a pencil in most situations is: "Je peux avoir un crayon?"