| Ulrich I | |
|---|---|
| Counts of East Frisia | |
 Ulrich I, count of East Frisia | |
| Reign | 1464–1466 |
| Predecessor | new creation |
| Successor | Enno I |
| Born | 1408 Norden, Lower Saxony, Germany |
| Died | 25 or 26 september, 1466 Emden, East Frisia, Germany |
| Spouse | Theda Ukena |
| House | Cirksena |
| Father | Enno Edzardisna |
| Mother | Gela of Manslagt |
Ulrich I of East Frisia was the first count of East Frisia, from 1408 in Norden to 25 or 26 September 1466, in Emden. He was a son of the chieftain Enno Edzardisna of Norden and Greetsiel, and Gela of Manslagt.