| Facebook Group Name | Interests | Who the group is for |
| Sigma Chi International Fraternity | Sigma Chi International Fraternity | All Brothers |
| Sigs in Recovery | Addiction/Recovery Support | Email brother Frank Feeney for entery |
| Sigs at an Airport | Airport | All Brothers |
| Sigma Chi Alumni - Montgomery/Auburn Alabama | Alabama Montgomery/Auburn Alumni | Alumni Group |
| Old Sigma Chi Guys | Alumni | Alumni Group |
| Sigma Chi – Alumni Chapter Officers Group | Alumni Chapter Officers | Alumni Group |
| Sigma Chi International Fraternity Gear Swap | Apparel | All Brothers |
| Atlanta Sigs | Atlanta Sigs | All Brothers |
| Augusta Area Sigma Chi | Augusta Alumni Group | Alumni Group |
| Sigma Chi and Automobiles Fan Page | Automobiles | All Brothers |
| Sigma Chi - 4x4 Sigs | Automobiles/Off roading/Trucks/4x4 | All Brothers |
| Sigs In Aviation | Aviation | All Brothers |
| Sigma Chi - Beta Chi Chapter | Beta Chi Chapter | Chapter |
| Sigma Chi Fraternity Big Sky Province | Big Sky Province | Province |
| Sigma Chi Business Network | Business Network | All Brothers |
| Sigma Chi Canada | Canada | All Brothers |
| Calgory Alumni Chapter | Calgory Alumni Chapter | Alumni Group |
| Sigma Chi Career Referrals | Career Referrals | All Brothers |
| Sigma Chi - Chapter Advisors | Chapter Advisors | Advisors |
| Chicago Sigs | Chicago sigs | All Brothers |
| Sigma Chi Cigars, Libations Pipes | Cigars | All Brothers |
| Sigma Chi - Sigs in Construction | Construction | All Brothers |
| Sigma Chi – Consul’s Circle | Consul | Consuls |
| Sigma Chi – Sigs Smoking, Grilling and Cooking | Cooking | All Brothers |
| Sigma Chi - Cyber Security Sigs | Cyber Security | All Brothers |
| Cylcling Sigs | Cylcling | All Brothers |
| Sigma Chi Dads | Dads - Sigma Chi Dads | All Dads |
| D.C. Area Sigma Chi | D.C. Area | Alumni Group |
| Detroit Alumni chapter | Detroit Alumni chapter | Alumni Group |
| Delta Omega Chapter of Sigma Chi | Delta Omega Chapter | Chapter |
| Delta Theta Chapter | Delta Theta Chapter | Chapter |
| Sigma Chi - Disability Success | Disability Success | All Brothers |
| Sigma Chi Down Syndrome Family | Down Syndrome Family | All Brothers |
| Sigma Chi Droners | Drones | All Brothers |
| East (SF) Bay Sigma Chi Alumni Chapter | East San Francisco Alumni Chapter | Alumni Group |
| Sigma Chi – Sigs in Education | Education | All Brothers |
| Sigma Chis in Entertainment | Entertainment | All Brothers |
| Eta Rho Alumni Chapter | Eta Rho Alumni Chapter | Alumni Group |
| Sigma Chi Fraternity – Sigs in Europe | Europe | All Brothers |
| Sigma Chi – Sigs in Finance | Finance | All Brothers |
| Firehouse Sigs | Firefighters | All Brothers |
| First Chapter House of the Sigma Chi Fraternity | First Chapter House | All Brothers |
| Sigs in Fitness | Fitness | All Brothers |
| Sigma Chi- Formula 1 | Formula 1 | All Brothers |
| Sigma Chi Alumni - Fresno State | Fresno State Alumni | Alumni Group |
| Sigma Chi - Esports | Gaming/ Epsorts | All Brothers |
| Sigma Chi - Gamma Delta Chapter | Gamma Delta Chapter | Chapter |
| Sigma Chi Gardening and Landscaping | Gardening and Landscaping | All Brothers |
| Sigma Chi Fraternity Grand Canyon Province | Grand Canyon Province | Province |
| Sigma Chi- Golf Club | Golf | All Brothers |
| Sigma Chi Headquarters Staff – Past and Present | Headquarters Staff | HQ staff |
| Sigma Chi Fraternity History Group | History | All Brothers |
| Ontario Quebec Sigma Chi Hockey Tournament | Hockey | All Brothers |
| Home Improvement Sigs | Home Improvement | All Brothers |
| Sigma Chi Horizons | Horizons | All Brothers |
| Sigs in Hospitality | Hospitality | Industry only |
| Sigma Chi – House Corporation Officers Group | House Corporation Officers | Alumni Group |
| Sigma Chi – Sigs Hunting and Fishing | Hunting/Fishing | All Brothers |
| California Sigma Chi Hunting and Fishing | Hunting/Fishing (California area) | All Brothers |
| Inland Sigs Alumni Chapter | Inland Alumni Chapter | Alumni Group |
| Sigs in Insurance | Insurance | All Brothers |
| Sigs In Investments | Investments | All Brothers |
| Sigs Who Want to Be Involved | Involvement | All Brothers |
| Kansas City Sigma Chi Alumni Association | Kansas City Alumni | Alumni |
| Sigma Chi – Sigs in Law | Law | All Brothers |
| Sigma Chi – Sigs in Law Enforcement | Law Enforcement | All Brothers |
| Los Angeles Sigma Chi Alumni Chapter | Los Angeles Alumni Chapter | Alumni Group |
| Sigma Chi – Magister’s Lounge | Magister | Magisters |
| Sigma Chi – Sigs in Marketing and Advertising | Marketing/Advertising | All Brothers |
| Martial Arts Sigs | Martial Arts | All Brothers |
| Sigma Chi Alumni of Greater Frederick, MD | Maryland, Greater Alumni of Frederick | Alumni |
| Sigma Chi – Sigs in Medicine | Medicine | All Brothers |
| MidSouth Sigma Chi Alumni Chapter | MidSouth Sigma Chi Alumni Chapter | All Brothers |
| Sigma Chi Fraternity – Military Sigs | Military | All Brothers |
| Lane Splitting Sigs | Motorcycles | All Brothers |
| Sigs and Motorsports | Motorsports | All Brothers |
| Sigma Chi Brothers in the Music Industry | Music Industry | Industry only |
| Sigma Chi - Sigs at Concerts | Music/Concerts | All Brothers |
| North Alabama Alumni Chapter | North Alabama Alumni Chapter | Alumni Group |
| North Atlantic Province of the Sigma Chi Fraternity | North Atlantic Province | Province |
| Sigma Chi Eastern North Carolina Province | North Carolina Province | Province |
| Sigma Chi - North Central Province Active and Alumni Brothers | North Central Province | Chapter |
| Sigma Chi – Ontario Province | Ontario Province | Province |
| Sigma Chi John Wayne Orange County (CA) Alumni Chapter | Orange County Alumni Chapter | Alumni Group |
| Orlando Alumni chapter | Orlando Alumni chapter | Alumni Group |
| Sigma Chi - Outdoor Sigs | Outdoors | All Brothers |
| Sigma Chi – Derby Days and Philanthropy | Philanthropy | All Brothers |
| Philly Sigs Alumni Association | Philly Sigs Alumni Association | Alumni Group |
| Sigs in Photography | Photography | All Brothers |
| Sigma Chi – Sigs in Politics | Politics | All Brothers |
| Sigma Chi- Portland Alumni | Portland Alumni | Alumni |
| Sigma Chi Pro Consuls | Pro Consuls | Pro Consuls |
| Quaestor Corner – Sigma Chi | Quaestor | Quaestors |
| Sigma Chi – Sigs in Real Estate | Real Estate | All Brothers |
| Sigma Chi Recruitment | Recruitment | All Brothers |
| Sigma Chi – Risk Managers | Risk Managers | Risk Managers |
| Sigs on the Run | Running/Exercising | All Brothers |
| Sigma Chi - Salesforce | SalesForce Sigs | All Brothers |
| San Diego Sigma Chi | San Diego Sigma Chi | All Brothers in the area |
| San Francisco Sigma Chi Alumni Chapter | San Francisco Alumni Chapter | Alumni Group |
| Sigma Chi Scholarship | Scholarship | All Brothers |
| Sigma Chi Fraternity - Ski & Snowboard Group | Snowboarding and Skiing | All Brothers |
| Sigma Chi – Sigs in Sports | Sports Industry | All Brothers |
| Sigma Chi- Tailgating Sigs | Sports/ Tailgating | All Brothers |
| Alcohol/ Spirits Enthusiasts | Sigs and Spirits | Alumni/21+ |
| St. Louis Alumni | St louis alumni | Alumni Group |
| Sigma Chis in Student Affairs | Student Affairs | All Brothers |
| Sigma Chi Success Mastermind | Success | All Brothers |
| Beer Enthusiasts | Suds and Sigs | Alumni/21+ |
| Sweethearts of Sigma Chi | Sweethearts | Sweethearts |
| Tacoma Sigma Chi Alumni Chapter | Tacoma Sigma Chi Alumni Chapter | Alumni Group |
| Sigma Chi - Ink Hoc Signo | Tattoos | All Brothers |
| Sigma Chi – Sigs in Technology | Technology | All Brothers |
| Texas SIgma Chi | Texas Sigma Chi | All Brothers |
| Sigma Chi Toronto Alumni Chapter | Toronto Alumni Chapter | Alumni Group |
| Sigma Chi Trading Post | Trading | All Brothers |
| Sigma Chi Adventure/Travel Circle, now Adventure/Travel Circle for Sigs | Travel/Adventure | All Brothers |
| Traveling Flag | Traveling Flag | All Brothers |
| Sigma Chi - Traveling Sigs | Travel | All Brothers |
| Tulsa Area Sigma Chi Alumni Chapter | Tulsa Area Alumni Chapter | Alumni Group |
| Sigma Chi Fraternity – United Kingdom | United Kingdom | All Brothers |
| Watch and Clock Enthusiasts | Watch and clock enthusiasts | All Brothers |
| Sigs on the Water | Water Sports | All Brothers |
| Sigma Chi Fraternity at WCSU | Western Connecticut State University | Chapter |
| 1855 Wine Club - Let's Talk About Great Wines | Wine | Alumni/21+ |
| Sigma Chi Erodelphians - Sig Writers & Book Lovers | Writers and book lovers | All Brothers |