| Albert I, Lord of Mecklenburg | |
| Noble Family: | House of Mecklenburg |
| Father: | John I, Lord of Mecklenburg |
| Mother: | Liutgart of Henneberg |
| Birth Date: | after 1230 |
| Death Date: | 15 or 17 May 1265 |
| Burial Place: | Doberan Minster |
Albert I, Lord of Mecklenburg (after 1230 - 15 or 17 May 1265) was briefly co-ruler of Mecklenburg from 1264 to 1265.
He was a son of John I and his wife, Luitgard of Henneberg (1210-1267), a daughter of Count Poppo VII of Henneberg. He ruled jointly with his brother Henry I. He may have married a daughter of Nicholas I of Werle, but no record of such a marriage, or any children, has survived.
Albert I died in 1265 and was buried in the Doberan Minster.