You can say “I’m hungry” in Spanish as:

• Tengo hambre. [Tengo hambre.](javascript:void(0))

• ¿Tienes hambre? (informal, asking someone if they are hungry) [¿Tienes hambre?](javascript:void(0))

Notes:

• In Spanish, common expressions use “tener hambre” (to have hunger) rather than the English “to be hungry.” The literal sense is “I have hunger,” but it is the natural equivalent for “I’m hungry.”

• If you’re addressing someone formally, you’d say “¿Tiene hambre?” (singular formal).

If you’d like, I can tailor examples to a particular tense (present, past) or to a short dialogue.