Formed - Summer 1940 (Golden Age)
Disbanded - 1951
Re-Formed - 1963 (Silver Age)
Disbanded - 1994
Re-Formed - 1999
| Member | Joined |
| Superman | Founding Member |
| Batman | Founding Member |
| Dr. Fate | Founding Member |
| Sandman | Founding Member |
| Hourman | Founding Member |
| The Flash | Founding Member |
| Green Lantern | Founding Member |
| Hawkman | Founding Member |
| The Atom | Founding Member |
| The Spectre | Founding Member |
| Johnny Thunder | All-Star Comics #6 |
| Starman | All-Star Comics #8 |
| Dr. Mid-Nite I | All-Star Comics #8 |
| Wonder Woman/Hippolyta (retcon) | All-Star Comics #12 |
| Mr. Terrific I | All-Star Comics #24 |
| Wildcat | All-Star Comics #24 |
| Black Canary I | All-Star Comics #41 |
| Robin | Justice League of America #55 |
| The Red Tornado | Justice League of America #64 |
| Power Girl | All-Star Comics #58 |
| Star Spangled Kid I | All-Star Comics #58 |
| Huntress | All-Star Comics #71 |
| Hawkgirl I | Retcon member, active ~1985 |
| Miss America | Retcon Member/ Retconned Un-Member (No longer canonical) |
| Starman VI | JSA #4 |
| Black Canary II | JSA #4 |
| Star-Spangled Kid II | JSA #4 |
| Hourman III | JSA #4 |
| Atom Smasher | JSA #4 |
| Hawkgirl II | JSA #4 |
| Sand | JSA #4 |
| Dr. Fate IV | JSA #4 |
| Dr. Mid-Nite | JSA #11 |
| Mr. Terrific | JSA #11 |