Boaz Kiplagat Lalang (born 8 February 1989) is a Kenyan middle distance runner, who specialises in the 800 metres.

His younger brother, Lawi Lalang, ran for the University of Arizona.

[1] At the 2008 Summer Olympics, Lalang barely missed running in the finals of the 800 m. At the 2010 IAAF World Indoor Championships, he won a silver medal in the 800 m.[2] He ran a mile personal best of 3:56.14 at the Drake Relays, defeating training partner and race favourite Bernard Lagat in the process and went on to lower his time to 3:52.18 in Oslo, Norway.

[3] On 29 August 2010 he ran a personal best of 1:42.95 at the Rieti meeting in second place behind the new world record set by David Rudisha.

He studies Business Administration at Rend Lake College in Illinois.