1. Low German, Czech and Scandinavian form of John [q.v.], from Hebrew "God has been gracious", and a variant of the Czech Jan. See also Johann.
The English surname Hankin was a medieval derivative from Johan and it is from that surname that the popular US forename/pet name Hank comes. This is now more commonly a nickname for Henry especially in the US.
2. Malay, meaning "winner".