Ovamboland People's Organization

The Ovamboland People's Organization is a defunct nationalist organization that advocated an independent Ovamboland (Namibia). Andimba Toivo ya Toivo and Sam Nujoma founded the OPO in 1959; Lucas Haleinge Nepela became its first chairperson. A year later, the organization sought a pan-ethnic independence for the country and formed into the South West Africa People's Organization.

On December 10, 1959, police shot and killed 11 protesters in Windhoek's Old Location, forcing OPO leaders to go into exile and create the South West Africa People's Organization.