Old-timer or oldtimer may refer to:
Person Old-timer, a person of old age Old-timer, a veteran Old-timer, an eggcorn for someone with Alzheimer's disease Old-Timers' Day, a US baseball tradition honouring Major League retirees
Vehicle
Oldtimer, a German, Dutch, Polish and Hungarian term for a vintage, antique or classic car Oldtimer Grand Prix, retro automobile racing in Austria Old timer, a specialized class of free flight model aircraft, for designs initially designed and flown before the end of 1942
Other
Old Timer, a brand of knives manufactured by Imperial Schrade Oldtimers (Pern), a group of characters in the fantasy fiction series Dragonriders of Pern The Oldtimers, a 1974-75 Canadian television series