Slabbert is a surname of Middle Dutch origin, meaning "herring fisher”. Notable people with the surname include:
Deon Slabbert (born 2000), South African rugby union player Dihan Slabbert (born 1982), South African singer, performer, composer, producer, musician, and songwriter Frederik van Zyl Slabbert (1940–2010), South African political analyst, businessman, and politician
See also Ex parte Slabbert, an important case in South African insolvency law