Gersem (c. 600) was a King of the Kingdom of Aksum in Northeast Africa.

Stuart Munro-Hay suggests that either Gersem or Armah were the last Aksumite Kings to issue coins.

[2] The official king list of the Ethiopian monarchy from 1922 lists a similarly named king called "Germa Asfar" who reigned from 631 to 645 (Ethiopian Calendar).

[4] Several types of coins have been dated to Gersem's reign, minted in gold, silver and copper.

Two types of the copper issue have been identified: one, like the gold issue, with a crowned bust of the king on the obverse, but with crosses on his shoulders, while the reverse bears a cross surrounded by a circle of dots with the inscription "He conquers through Christ"; the second shows the profile of the king on both sides, but has little other identifiable details.