| Country: | England |
| Coordinates: | 53.7959°N -0.2153°W |
| Label Position: | top |
| Official Name: | Thirtleby |
| Civil Parish: | Coniston |
| Unitary England: | East Riding of Yorkshire |
| Region: | Yorkshire and the Humber |
| Lieutenancy England: | East Riding of Yorkshire |
| Constituency Westminster: | Beverley and Holderness |
| Post Town: | HULL |
| Postcode District: | HU11 |
| Postcode Area: | HU |
| Dial Code: | 01964 |
| Os Grid Reference: | TA176347 |
| Static Image Name: | White House Farm, Thirtleby.jpg |
| Static Image Caption: | White House Farm, Thirtleby |
Thirtleby is a hamlet in the civil parish of Coniston, in the East Riding of Yorkshire, England. It is situated approximately 6miles north-east of Hull city centre and 1miles west of the village of Sproatley.
Thirtleby was formerly a township in the parish of Swine,[1] in 1866 Thirtleby became a separate civil parish, on 1 April 1935 the parish was abolished and merged with Coniston.[2] In 1931 the parish had a population of 55.[3]