Vangelis Liadelis was a Greek football goalkeeper of the late-1960s - 1970s era.
Liadelis played for Olympiakos. He appeared in four league games in the 1969 season and two in 1970. He also started for Olympiakos in the 1969 final of the Greek Football Cup.
In 1970, Liadelis transferred to Olympiakos Volos.
Vangelis Liadelis is the father of basketball player Panagiotis Liadelis.