André Isak "Kraai" van Niekerk (born 1938) is a South African former politician.
He obtained a Ph.D. in Agriculture at the University of Stellenbosch, and then worked in several research positions before settling down in Rugseer near Kenhardt as a sheep farmer.
Van Niekerk embarked on a political career for the National Party when he was elected MP for Prieska in 1981.
He retired from parliament in 1997 to join Louis Luyt's Federal Alliance before the elections in 1999.
Van Niekerk, who is a member of AgriSA, has represented not less than three parties in the South African parliament.