Second-half goals from Chris Perry and David Bell ended Nottingham Forest's unbeaten away record as Luton secured a 2-1 victory at Kenilworth Road.
Defender Perry opened the scoring with a diving header from close range in the 52nd minute.
And Bell clinched the three points when he fired his fourth goal of the season two minutes from time after good work from veteran striker Paul Furlong.
Julian Bennett pulled a goal back for the visitors in the final minute.
Luton: Brill, Fojut, Goodall, Coyne, Perry, Bell, Currie, Edwards, Robinson, Spring, Furlong.
Subs Not Used: Hutchison, Morgan, Jackson, Andrew, McVeigh. Booked: Bell.
Goals: Perry 52, Bell 88.
Nottm Forest: Smith, Bennett, Wilson, Chambers, Breckin, Lennon (McGugan 62), Commons, Cohen, Clingan (Morgan 86), Agogo, Holt.
Subs Not Used: Sinclair, Thornhill, Roberts.
Goals: Bennett 90.
Ref: Carl Boyeson (E Yorkshire).