The accident happened near 57th Avenue and Thunderbird on Wednesday.
24-year-old Brandon Montemayor was crossing Thunderbird Road in a marked crosswalk when he was struck by a vehicle driving westbound.
The person who hit Montemayor did not stop and fled the scene.
Paramedics tried to save his life but were unsuccessful.
Police believe the accident happened between 4:35 a.m. and 4:45 a.m.
Anyone with information, no matter how insignificant is asked to call Glendale Police at 623-930-3000, or Silent Witness at 480-WITNESS.