Reinhard "Kalla" Gertze (1960 – 13 March 2008) was a Namibian university lecturer and parliamentarian as a member of the Congress of Democrats (CoD) party.
He soon left for studies at the United Nations Institute for Namibia in Zambia and thereafter moved to France, where he earned a bachelor's degree and a teaching diploma.
Gertze later returned to France and earned a Master of Arts degree in Linguistic Theories and Literature at the Metz University.
Along with hundreds of other Namibian exiles, Gertze was accused of having turned against the liberation movement SWAPO, and of spying on behalf of the South African oppressors.
After returning to Namibia after independence, Gertze served as president of the Breaking the Wall of Silence (BWS) movement which worked for government recognition of past abuses of SWAPO detainees while in exile.