Police are appealing for public assistance to help locate missing 15-year-olds Martin (Flynn) Cawood, Cody Lynch-Stuart and Noah Read.
All three boys are residents of Wodonga and were last seen on 1 May.
Investigators believe the boys are travelling together and may be in Melbourne.
Police and family have concern for the boys due to the length of time they have been missing.
Investigators have released images of the teens in the hope that someone may have information on their current whereabouts.
Anyone with information is asked to contact the Wodonga Police Station on 02 6049 2755.