Implemented in 1929, the Distinguished Service Chapter is the highest honor bestowed on a member of the fraternity. The Distinguished Service Key is presented to Sigma men who demonstrate exemplary work to the fraternity and outstanding accomplishments to the greater society at large. With this key, these members would open the key to the door of the most exclusive chapter in the fraternity. Below are the brothers within the Mighty Eastern Region upon whom this honor has been bestowed:
Hon. Dr. Woodrow C. Carter Sr. Epsilon Sigma #43
Hon. Oliver C. Eastman Esq. Epsilon Sigma #49
Hon. Dr. Parlette L. Moore Zeta Sigma #59
Hon. Richard E. Alleyne Sr. Kappa Beta Sigma #68
Hon. Richard M. Ballard Jr. Esq. Iota Sigma #71
Hon. Dr. Gilbert H. Francis Kappa Beta Sigma #74
Hon. Dr. Gulbert A. Daley Zeta Sigma #83
Hon. LtC. Lucius E. Young Alpha Sigma #89
Hon. George H. Hibbler Nu Sigma #95
Hon. Henry L. Moore Nu Sigma #102
Hon. Clifton Felton Zeta Alpha Sigma #107
Hon. Thomas Tommie Washington Alpha Sigma #108
Hon. Moses C. McClendon Iota Sigma #109
Hon. Alonzo C. Jackson Chi Sigma #112
Hon. Wilfong Wilson Nu Sigma #119
Hon. Carter D. Womack Zeta Alpha Sigma #120
Hon. Robert B. Greaux Chi Sigma #122
Hon. Jesse T. Williams Delta Gamma Sigma #123
Hon. Marvin L. Doc Cheatham Sr. Zeta Sigma #124
Hon. Lou Hassell Chi Sigma #133
Hon. Peter M. Adams Esq. Kappa Beta Sigma #135
Hon. T. Harding Lacy Jr. Iota Sigma #140
Hon. Emanual J. Kinney Jr. Nu Sigma #147
Hon. Sydney S. Moshette Jr. Kappa Beta Sigma #149
Hon. Eric Gilliam Alpha Sigma #150
Hon. Dr. Kevin West Chi Sigma #152
Hon. Scherod C. Barnes Zeta Sigma #153
Hon. Millard J. Watkins Jr. Iota Sigma #159
Hon. Daniel J. Tann Esq. Nu Sigma #163
Hon. Greville French Epsilon Sigma #169
Hon. Dr. James Archie Powell Pi Beta Sigma #172
Hon. Jonathan A. Mason Sr. Kappa Beta Sigma #179
Hon. John Lewis Sigma Sigma Sigma #180
Hon. Darryl T. Williiams Kappa Upsilon Sigma #191
Hon. Jean Jet Lamonthe Lambda Lambda Sigma #193
Hon. Leonard O. Lockhart Delta Pi Sigma #194
Hon. John White Sigma Sigma Sigma #204