The 2005 ITF Seniors World Individual Championships took place on 2-9 April in Perth, Australia.
The champions in each age category are listed below, or click the link to view the full results and drawsheets from the tournament.
- Results and drawsheets
35s
- Men's singles: Chris Wilkinson (GBR)
- Men's doubles: Matthias Huning (GER) / Frank Potthoff (GER)
- Women's singles: Florence Boucard (FRA)
- Women's doubles: Mary Dailey (USA) / Renata Marcinkowska (USA)
40s
- Men's singles: Mario Tabares (USA)
- Men's doubles: Glenn Erickson (USA) / Mario Tabares (USA)
- Women's singles: Rene Plant (RSA)
- Women's doubles: Rosanne Duke (AUS) / Rene Plant (RSA)
45s
- Men's singles: Patrick Serret (AUS)
- Men's doubles: Mike Fedderly (USA) / Val Wilder (USA)
- Women's singles: Ros Balodis (AUS)
- Women's doubles: Ros Balodis (AUS) / Kaye Nealon (AUS)
50s
- Men's singles: Alan Rasmussen (DEN)
- Men's doubles: Bruce Osborne (AUS) / Andrew Rae (AUS)
- Women's singles: Elisabeth Appel (NED)
- Women's doubles: Lyn Mortimer (AUS) / Susanne Walter (AUS)
55s
- Men's singles: Bob Litwin (USA)
- Men's doubles: Neal Newman (USA) / Larry Turville (USA)
- Women's singles: Elizabeth Allan (AUS)
- Women's doubles: Elizabeth Allan (AUS) / Kerry Ballard (AUS)