The Roughyeds will travel to Barrow on February 2, before home games against Swinton (February 9) and Leigh (February 15).
Oldham chairman Chris Hamilton said: “The Leigh game will put the finishing touches to a pre-season programme that will test our boys in every sense.
“Leigh have been one of the strongest clubs in the Championship over the last few years, always with a big squad and always with sound back-up from a very competitive second string.
“They open their league campaign on the same weekend, so the team that comes to Whitebank will comprise those first-team squad members who are not on senior duty plus leading lights from their talented under-20s squad.
“It will be a quality side, make no mistake.”