Gerald Otieno Kajwang (15 July 1959 – 18 November 2014) was a Kenyan politician. He belonged to the Orange Democratic Movement and had been elected to represent the Mbita Constituency in the National Assembly of Kenya since the Kenyan parliamentary election, 2007. In the bitterly contested 2013 elections, Otieno Kajwang was elected to represent Homa Bay county as a senator.

Senator Kajwang died on 19 November 2014 at Mater hospital after suffering cardiac arrest. He was the brother to Ruaraka MP, Tom Joseph Kajwang’.