How do you translate "bun" in Spanish?

Hi all,
I need the translation of "bun". It's a special kind of bread.
Thanks

Bollo is a possibility.
Depending what it refers to in a specific context it may mean: bollo dulce (in northern England for instance), or also the kind of bread that is used for hamburgers that is called pan para hamburguesa o pan de hamburguesa.

Hope it helps!
Clarab

I was also thinking about "Pan de hamburguesa" as well, I agree with Clarab!

Bun or hamburger bun is definitely as everyone said pan de hamburguesa.

Bun in general puede ser bollo (Spain), asema (Vzla.), mogolla (Col.).