Jakub Plichta (; died 7 February 1407) was a Lithuanian Roman Catholic clergyman who since 5 May 1399 served as the second Bishop of Vilnius until his death.
Plichta was of Lithuanian origin, and belonged to the Franciscans. Plichta undoubtedly knew the Lithuanian language and local conditions (he was described as "of the same nation and language"), which was important for his selection as the Bishop of Vilnius by the Vilnius Cathedral Chapter with the support of Wà Âadysà Âaw II Jagieà Âà Âo, Supreme Duke of Lithuania and King of Poland.