H
- Haddenham: TL465750
- Haddenham/Aldreth Fens: TL455735
- Haddenham (Long Drove): TL423750
- Haddon: TL135926
- Hail Weston: TL165622
- Hall Farm (Abbots Ripton) - See Abbots Ripton (Hall Farm)
- Hamerton: TL135798
- Hamerton Grove: TL120797
- Hampton Hargate: TL175951
- Hampton Lakes: TL172939
- Hardwick Wood: TL354572
- Harlton: TL385524
- Harston: TL425508
- Hartford GP: TL265728
- Haslingfield: TL405523
- Hatley Park: TL275510
- Hatley St George: TL280510
- Hauxton Fen: TL438523
- Hauxton Mill: TL432528
- Hauxton Pits: TL436518
- Hayes Wood: TF134030
- Hayeswood Spinney: TF113019
- Hayley Wood: TL294530
- Heathfield: TL4546
- Helpston: TF120050
- Hemingford Grey: TL290705
- Hemingford Meadows: TL3071
- Hemingford Mill GP: TL298710
- Hemingford Park: TL276710
- Heydon: TL432401
- Heydon Grange: TL420426
- Hick's BP: TL185962
- High Cross, Cambridge: TL424592
- High Wash - See Nene Washes (High Wash)
- Hildersham Hall: TL543483
- Hildersham Wood: TL535457
- Hill Farm: TL275633
- Hill Wood: TL205787
- Hilly Wood: TF111045
- Hilton: TL290662
- Hinchingbrooke CP: TL220715
- Hinxton: TL496450
- Hinxton Genome Campus: TL498441
- Histon: TL440635
- Hod Fen: TL188909
- Holland Wood: TL240785
- Holme Fen: TL205895
- Holme Wood: TL185880
- Holt Fen: TL530733
- Holt Island NR: TL310714
- Holywell: TL340708
- Home Farm (Pampisford) - See Pampisford (Home Farm)
- Honey Hill: TL440884
- Horseheath: TL613473
- Houghton Meadows: TL286714
- Houghton Mill: TL281719
- Hurst Drove Reservoir: TL520813