Heliconius wallacei, the Wallace´s longwing, is a butterfly of the family Nymphalidae. It was described by Tryon Reakirt in 1866. It is found from Venezuela and Trinidad to southern Brazil and Peru. The habitat consists of lowland rainforests.

The wingspan is 70–75 mm.

The larvae are gregarious and mostly feed on Passiflora species from the subgenus Distephana.

Subspecies: 

• H. w. wallacei (Brazil: Pará)
• H. w. araguaia Brown, 1976 (Brazil: Goiás)
• H. w. colon Weymer, 1891 (Surinam, Brazil: Amazonas)
• H. w. flavescens Weymer, 1891 (Ecuador, Peru, Guyana, Bolivia)
• H. w. kayei Neustetter, 1929 (Trinidad)
• H. w. mimulinus Butler, 1873 (Colombia)