Rosy Jack World is an EP recording by the Blake Babies, released in 1991 (see 1991 in music). The album title was taken from a song on The Frogs' 1989 album It's Only Right and Natural.
Doug Iverson of the Toledo Blade wrote that the EP's original songs were what "really sparks the listener's interest." SPIN magazine's Sue Cummings stated that the EP wasn't as "great a departure as last time - rather, it crystallizes the melodic impetus of Sunburn."