Jason Hamutenya Ndadi (born 1926 in Ouhongo, South West Africa, today Namibia, died 1977 in Angola), also known as Wanehepo, was a Namibian liberation fighter and co-founder of the Ovamboland People's Organization (OPO), the predecessor organization of SWAPO.
Hamutenya died in a traffic accident and was initially buried in the Hainyeko Training Center Cemetery near Lubango in Angola. The body was relocated to his home town of Ouhongo on 6 May 2005.
A street in Windhoek's Olympia suburb was renamed after Ndadi in 2007.