1925 Australasian Championships – Men's singles

First-seeded James Anderson defeated Gerald Patterson 11–9, 2–6, 6–2, 6–3 in the final to win the men's singles tennis title at the 1925 Australasian Championships.

Seeds
The seeded players are listed below. James Anderson is the champion; others show the round in which they were eliminated.


 * 1) 🇦🇺 James Anderson (champion)
 * 2) 🇦🇺 Gerald Patterson (finalist)
 * 3) 🇦🇺 Pat O'Hara Wood (semifinals)
 * 4) 🇦🇺 Norman Peach (quarterfinals)
 * 5) 🇦🇺 Fred Kalms (quarterfinals)
 * 6) 🇦🇺 Bob Schlesinger (semifinals)
 * 7) 🇦🇺 Gar Hone (quarterfinals)
 * 8) 🇦🇺 Jack Cummings (second round)

Key

 * Q = Qualifier
 * WC = Wild card
 * LL = Lucky loser
 * r = Retired