Study association GEWIS obviously has several fraternities which contribute to the atmosphere at GEWIS and organize fun activities. Some fraternities have retired, but luckily new fraternities continue to be founded.

The fraternities of GEWIS (in arbitrary order):

• Moot (Retired)
• BUC (Retired)
• ZAT (Retired)
• Weereld (Retired)
• MAF (Retired)
• Hoopje (Retired)
• GEBROM (Retired)
• Banaan (Retired)
• I.V.V (as of 20 november 2003)
• Half 5 (Retired)
• B.O.O.M. (as of 19 september 2005)
• GELIMBO (as of 29 november 2006)
• GEPWNAGE (as of 29 october 2008)