B
- Belgian Chamber of Commerce for Southern Africa (BCCSA)
- Belhar Knights (BK)
- Bellville Judo Club (BJC)
- Benoni Chamber of Commerce & Industries (BCCI)
- Bergville Taxi Association (BTA)
- Bergvliet Judo Club (BJC)
- Bethlehem Hengelaars-Vereniging (BHV)
- Beverages Association of South Africa (BEVSA)
- Big Bore Association – Southern Africa (BASA)
- Biodynamic Agricultural Association Southern Africa (BAASA)
- Biokinetics Association of South Africa (BASA)
- Birdlife Eastern Cape (BEC)
- Birdlife eThekwini KZN (BEKZN)
- Birdlife Northern Gauteng (BLNG)
- Birdlife Polokwane (BP)
- BirdLife South Africa (BLSA)
- Bivalve Shellfish Farmers Association of South Africa (BSASA)
- Black Brokers Council of South Africa (BBCSA)
- Black Business Council in the Built Environment (BBCBE)
- Black Conveyancers Association (BCA)
- Black Economic Empowerment Cleaning Association (BEECA)
- Black Lawyers’ Association (BLA)
- Black Management Forum (BMF)
- Black Professional Valuers Association (BPVA)
- Blind South Africa (BSA)
- Bloemfontein Posduif Federasie (BPF)
- Blue Cape (BC)
- Blue Water Canoe Club (BWCC)
- Bluff Ratepayers and Residents Association (BRRA)
- Board of Airline Representatives of South Africa (BARSA)