Leonard Mucheru Maina (born 13 June 1978 in Nyandarua) is a Kenyan long-distance runner, who started from 2004 until 2007 as Mushir Salem Jawher (Arabic: مشير سالم جوهر), having acquired the citizenship of Bahrain.

Mucheru originally represented Kenya and finished fourth in the short race at the 2000 World Cross Country Championships.

[2] At the end of the season he finished fourth at the World Athletics Final for the second year in a row.

Other medalists for Bahrain included Yusuf Saad Kamel, Belal Mansoor Ali and Tareq Mubarak Taher, also imported from Kenya.

[1] On 21 January 2007 it was reported that Bahrain had reversed its decision to strip him of his Bahraini citizenship, and has been allowed to continue competing for the Persian Gulf state.