The Hornsby Rugby Union Football Club is a rugby union team from Hornsby in Sydney, Australia.

The club plays in the New South Wales Suburban Rugby Union competition,[1] and has historically competed in the Central Coast competition.

That competition was absorbed into the New South Wales Suburban Rugby Union 'Subbies' competition in 1993 bringing Hornsby, Mosman, Drummoyne and UNSW with it.

In their first year in the new competition Hornsby won the 1st Division Club Championship (Bruce Graham Shield) along with the 2nd Grade, 3rd Grade and Colts Premierships.

Hornsby transferred to the Central Coast Rugby Union's competition for the 2015 season.