Jonathan Apphus (Hebrew: יונתן הוופסי, Ancient Greek: Ἰωνάθαν Ἀπφοῦς) was leader of the Hasmonean Dynasty of Judea from 161 to 143 BCE. The name Apphus (Ἀπφοῦς) means "the diplomat", in allusion to a trait prominent in him (1 Maccabees ii. 5).
Jonathan Apphus was the youngest of the five sons of Mattathias. His father was a Kohen credited as the founding figure of the rebellion of the Maccabees against Antiochus IV Epiphanes of the Seleucid Empire. However Mattathias died in 167 BCE while the rebellion was only beginning.
He was survived by Jonathan and his brothers Eleazar Avaran, Johanan, Judas Maccabeus, and Simon Thassi. They were sworn to continue the rebellion of their father. Judas soon became their de facto leader and the military chief of the rebellion.
Jonathan served under his brother and took active parts in the battles against the Seleucid forces. His reputation for courage is lesser to that of Judas but hardly questionable. His courage had been frequently tried. However, Judas was one of the casualties of the Battle of Elasa (161/160 BCE). The victor of the battle was Bacchides, a Seleucid general under Demetrius I Soter. Bacchides proceeded with crushing rigor against the Maccabean party while at the same time a famine broke out in the land. The Jewish rebels required a new leader and Jonathan was chosen.