Mark Barr (born August 24, 1986) is an American para-triathlete.

[2] Barr had his right leg amputated at the age of 14 due to osteosarcoma.

[3] In college, Barr swam for Cal Poly in San Luis Obispo.

[4] He competed for the Mustangs at the Big West Championships, and in February 2008 at the conference meet, set then-American Paralympic records for the 100 butterfly (57.68 seconds) and 200 fly (2:06.17).

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