Nothobranchius steinforti is a species of killifish in the family Nothobranchiidae.

[2] It is endemic to Upper Wami River drainage, Tanzania.

Its natural habitat is intermittent freshwater marshes, pools and rice fields.

[1] This species was described in 1977 by Rudolf Hans Wildekamp with the type locality given as "8 kilometers from Kimamba, Tanzania".

[3] The specific name honours the Dutch aquarist Theo Steinfort who helped collect the type and bred this species in captivity, making it available to other killifish hobbyists.