Simple Q&A D&D 3.5 (by RAW) XXI

[Kuulvheysoon]

Q 378

A bit of a weird one - what are some templates that would add physical horns to the head of a Giant (specifically, an Ogre)?

A 378

I'm not quite sure what you mean by this. If you mean physical horns that can be used as part of a gore attack, then Half-Minotaur is probably your best option.

If it's more fluff-wise, Half-Dragon and Half-fiend could both conceivably add horns to a base race.