Ali Hasan Mahboob (born Silas Kirui on 31 December 1981 in Kapsabet) is a Kenyan-born Bahraini long-distance runner.

[6] Mahboob again had a top ten finish at the 2011 IAAF World Cross Country Championships, but his main focus was on the track that year.

[5] He claimed his second 10,000 m title at the 2011 Asian Athletics Championships and was runner-up to Josphat Menjo in that event two weeks later at the 2011 Military World Games.

[7][8] He elected to run over the longer distance at the 2011 World Championships in Athletics, but did not manage to finish the race.

[9] At the 2012 Asian Cross Country Championships he came fourth in a Bahraini sweep of the top four places and shared in the team title.