The chairperson of Blackheath-Malibu Taxi Association, Patrick Consani, 49, was shot and killed in front of his house at 6.04am on Tuesday.
A 24-year-old man was also shot and killed in his car in Butskopp Road, opposite the petrol filling station, at 6.13am.
Police spokesperson FC Van Wyk said the motive for both shootings is currently unknown.
A family member of Consani, who did not want to be named, said she was also in the taxi industry and feared for her life.
Western Cape Minister of Transport and Public Works, Bonginkosi Madikizela, has condemned the killing of Consani and instructed officials from his department to meet with the leadership of the South African National Taxi Association to bring calm to the Blackheath area.
“We will not tolerate illegal operations and route invasions and will work closely with the police and other law enforcement authorities to rid the minibus taxi industry of the criminals behind these callous acts,” he said.