| Rabbit Hill | 41 | 447.106 | Leverington |
| Radio Telescope [39-54-] & Royal Astronomy Observatory [39-53-] | | | see Lords Bridge |
| Ramsey Road | 39 | | Benwick |
| Rampton | 46, 47 | | |
| Rand's Wood | 65 | 620.505 | = Yenhall Wood, West Wratting |
| Ranson Moor | 39 | 37-92- etc | Doddington |
| Raynor's Grove | 44 | 466.486 | Whittlesford |
| Reach | 56 | 56-66- | |
| Reach sect. Devil's Ditch | 56 | 56-65- | Reach |
| Reche/Reach Lode | 56 | | Reach & Swaffham Prior |
| Red Cross Turnpike | 45 | 470.550 | Cambridge |
| Reservoir at Hinton | 45 | 483.555 | Cambridge |
| Richmond Field | 41 | 41-11- | Gorefield, Leverington |
| Richmond Hall | 41 | 41-11- | (former Manor House) Leverington |
| Rifle Butts (old), Mill Rd. | 45 | | as below |
| Rifle Range | 45 | 475.586 | Cambridge |
| Rimney Bank | 58 | c.565.839 | betwn Ely & Prickwillow |
| Ring's End | 30 | 39-02- | Elm |
| Rive Moor | ?47 | | Sutton |
| Rivey Wood | 54 | 565.478 | Linton |
| Robin Knight's Lane | ?38 | | Chatteris |
| Roman Bank | 41 | 44-12- etc. | Newton & St Giles = |
| | | 44-13- | Sea Bank' and A.1101 |
| Roman Bank | 40 | 468.085 | Wisbech Vc 28 |
| Roman Road (Gogs) | 45 | 49-54- | |
| Roman Road | 55, 54 | | |
| Roman Villa sect. Devil's Ditch | 56 | | see Villa sect. |
| Romsey Tip | 45 | 482.574 | Cherry Hinton |
| Rope Walk | 41 | 463.101 | Wisbech |
| Roper's Field Bank | ?41 | | Wisbech |
| Roslyn/Rossal Pits | 58 | | see Roswell |
| Roswell Pits | 58 | 547.805 | Ely |
| Round Course | 56 & 66 | | Swaffham Prior & Dullingham |
| Rowley Hill | 44 | 42-49- | Harston |
| Royston Church | 34 | 357.406 | Herts, Vc 20 |
| Ruddery spring | 24 | 280.402 | Guilden Morden |
| Rushbeach [Bushbeach] | 48 | | Chatteris |
| Rushbeach-Ditch of 16 Foot | 48 | c.42-87- | Chatteris |
| Rushbech Farm | 48 | 430.875 | Chatteris |
| Rushland | ?48 | | ? Chatteris |
| The Rush Way | 48 | 44-81- | Witcham/Mepal bdy |
| Russell, Sir Francis' house | 66 | | Chippenham |