Season 3 of Strike Back or Strike Back: Vengeance, as it is known in the United Kingdom aired in August 17, 2012. Filming for the 10-part series began in South Africa in early 2012.
- Philip Winchester as Sgt. Michael Stonebridge
- Sullivan Stapleton as Damien Scott
- Rhona Mitra as Maj. Rachel Dalton
- Rhashan Stone as Maj. Oliver Sinclair
- Michelle Lukes as Sgt. Julia Richmond
- Charles Dance as Conrad Knox
- Shane Taylor as Craig Hanson
- Natalie Becker as Jessica Kohl
- Vincent Regan as Carl Matlock
- Lyne Renée as Rebecca Levi
- Laëtitia Eïdo as Markunda
- Stephanie Vogt as Christy Bryant
- Somalia: The Somali flag (a white star on a blue background) is briefly seen spray painted on a wall during the first series 2 production recon which can be viewed on the Cinemax site.