Agathocles Dikaios is a Buddhist Indo-Greek king, who reigns between around 190 and 180 BCE.

He might have been a son of Demetrius and one of his sub-kings in charge of the Paropamisade between Bactria and India.

In that case, he was a grandson of Euthydemus whom he qualified on his coins as "Basileas Theos" (Greek for "God-King").

Agathocles was contemporary with or a successor of King Pantaleon.

He seems to have been attacked and killed by the usurper Eucratides, who took control of the Greco-Bactrian territory.

Little is known about him, apart from his extensive coinage.