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| Oan Citadel | |
| Continuity: | DC Universe |
| Category: | Headquarters |
| Sector: | Sector 0 |
| Planet: | Oa |
| Residents: | Oans; Green Lantern Corps |
| 1st appearance: | Green Lantern, Vol. 2 #1 |
The Oan Citadel is a fictional location featured in comic books published by DC Comics. It is associated with the Green Lantern series of comic titles and first appeared in Green Lantern, Volume 2 #1 in August, 1960.