The "Halo" singer has long listed her birthday as September 4, 1981, making her 34, but Mathew claims she is actually the same age as pop star Pink, who was born in 1979, reported Daily Mirror.
"These guys had a competitiveness. (Music mogul) L A (Reid) had a girls group, but I bet you don't know who the lead singer was - Pink. She's the exact same age as Beyonce and there used to be this battle of who was better.
Usher turned 37 last week.
Beyonce has yet to comment on her father's statements, but it's not the first time conspiracy theories have surfaced concerning the superstar's age.
In 2006, a celebrity gossip website editors claimed officials in the Department of Health in her native Texas had her listed as seven years older than she claims.