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- Thoresway - Land at RAF Binbrook - CA-7-1-159
- Thoresway - Land at RAF Binbrook - CA-7-1-17
- Thoresway - Land at several farms owned by the Sir Richard Sutton’s Settled Estates – CA-7-1-495
- Thoresway - Lings Farm and land at Rothwell and Croxby - CA-7-1-361
- Thorganby - Brocklesby Estate – land owned by the Yarborough 1961 Settlement Worsley Fund - CA-7-1-598
- Thorganby - Land at RAF Binbrook - CA-7-1-159
- Thorganby - Land at RAF Binbrook - CA-7-1-17
- Thorpe Le Fallows - Land at Lockwood Estates Ltd - CA-7-1-354
- Thorpe le Fallows - Land at Thorpe in the Fallows - CA-7-1-524
- Thorpe on the Hill - Land at Morton Lane (Tunman Wood Nature Reserve) - CA-7-1-419
- Thorpe on the Hill - Land at various reserves owned by Lincolnshire Wildlife Trust - CA-7-1-438
- Threekingham - The Billingborough Estate - CA-7-1-344
- Thurlby (NK) - Land at Haddington - CA-7-1-248
- Thurlby (NK) - Land at the Aubourn Estate - CA-7-1-249
- Thurlby - Land and property at Dovecote Lane - CA-7-1-492
- Thurlby - Land and property at the Aubourn Estate - CA-7-1-493
- Thurlby - Land at Dole Wood - CA-7-1-201
- Thurlby - Land at Lawrance Park - CA-7-1-238
- Thurlby - Land at RAF Swinderby - CA-7-1-175
- Thurlby - Land at RAF Swinderby - CA-7-1-99
- Thurlby - Land at Thurlby Fen and Baston Fen Nature Reserves - CA-7-1-119
- Thurlby - Land at Thurlby Fen Slipe Nature Reserve - CA-7-1-193
- Thurlby by Bourne - Land known as Dole Wood Nature Reserve - CA-7-1-408
- Thurlby near Bourne - Land at Raymond Mays Way - CA-7-1-450
- Thurlby near Bourne - Math Wood Field - CA-7-1-529
- Thurlby nr Bourne - Land at various reserves owned by Lincolnshire Wildlife Trust - CA-7-1-438
- Timberland - Land to the east of the B1189 & land east of St Andrew's Church - CA-7-1-480
- Toft Newton - Land at RAF Faldingworth - CA-7-1-166
- Toft with Lound and Manthorpe - Land known as Manor Farm, Braceborough and Wilsthorpe - CA-7-1-347
- Toft with Lound and Manthorpe - Land surrounding Grimsthorpe Park and land at Langtoft - CA-7-1-620
- Torksey - Land at Lincoln Golf Club, Torksey - CA-7-1-272
- Toynton All Saints - Land at Keal Carr Nature Reserve - CA-7-1-133
- Toynton All Saints - Land at Pawson's Field Nature Reserve - CA-7-1-143
- Toynton All Saints - Land at various locations - CA-7-1-510
- Toynton All Saints - Land at various reserves owned by Lincolnshire Wildlife Trust - CA-7-1-396
- Toynton All Saints - Land at various reserves owned by Lincolnshire Wildlife Trust - CA-7-1-438
- Toynton St Peter - Land at various locations - CA-7-1-510
- Tumby - Land at Kirkby Gravel Pit Nature Reserve - CA-7-1-135
- Tumby - Land at RAF Coningsby - CA-7-1-168
- Tumby - The Tumby Estate - CA-7-1-546
- Tydd St Mary - Land within the South Holland Internal Drainage District - CA-7-1-256