Tommy is a fictional character in the Hey Arnold! TV Series.

He is Maria's boyfriend. Maria went on a "date" with Arnold to make Tommy jealous in "6th Grade Girls".

He also appeared with the whole city in "Arnold Betrays Iggy" and in the "Arnold's Valentine" episode at the Chez Pierre restaurant, where he tries to get together with Ruth (though she initially mistakes him for a bus boy). He has black hair in this episode instead of brown hair like he had in the 6th Grade Girls episode, though this is likely to simply be a continuality error.