Troy Matthew Kastigar[1] (March 16, 1981 – September 2009) was an American jihadist who fought for the al-Shabaab militia in Somalia, and was killed there in 2009.

[2] Like Douglas McCain (another American jihadist, killed in Syria in 2014), he was born in the US and attended Robbinsdale Cooper High School in New Hope, Minnesota, and the two may have been roommates for a while.

He took karate lessons in Golden Valley, Minnesota, when he was ten and earned a black belt; his instructor remembered him as "very respectful, polite, upbeat, positive".

[3][6] He left Minneapolis in November 2008,[3] apparently with a group of Somali men he had met in Minnesota:[6] Al-Shabaab was reportedly recruiting heavily in the Twin Cities area.

[8] Kastigar was killed in September 2009 in Somalia, according to a 2011 report;[3] he was the fifth[8] or sixth person from Minnesota to die there, and the first US citizen of that group.