Peter "Pedro" Gallagher (1937–2003) was an Australian rugby league footballer.

Born in Townsville, Queensland Gallagher played his entire Brisbane Rugby League premiership first grade career of 11 seasons with the Brothers club.

At the end of that year he was selected for the 1963 Kangaroo Tour of England and France.

In 1967 after recovering from a knee injury he returned to the national side for all three Tests against New Zealand.

He made his sole appearance as captain of the Kangaroos in the 2nd Test in London in November 1967.