The alphabetic listings of the monuments included in the Megalith Map.
| Name | Map Ref. | Extant? | |
| Oddendale Stone Circle | NY593129 | Yes | more... |
| Offerton Moor Stone Circle | SK213805 | Yes | more... |
| Oke Tor Stone Row | SX605895 | No | |
| Old Bourtreebush Stone Circle | NO903961 | Yes | more... |
| Old Hall Of Dunn Stone Circle | ND204564 | Yes | more... |
| Old Keig Stone Circle | NJ596193 | Yes | more... |
| Old Rayne Stone Circle | NJ679280 | Yes | more... |
| Orwell Stone Row | NO149043 | Yes | more... |
| Oughtboy Stone Circle | H590930 | No | |
| Oughtboy Stone Row | H595935 | Yes | more... |
| Oughtihery NW Stone Circle | W390820 | Yes | more... |
| Oughtihery SE Stone Circle | W413799 | Yes | more... |
| Owenreagh Stone Circle | H742903 | Yes | more... |
Stone Circles and Rows beginning with...
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.
Back to the Megalith Map.