Justinian II (669 – 11 December 711), surnamed the Rhinotmetos or Rhinotmetus (Greek: "the slit-nosed"), is the last Byzantine Emperor of the Heraclian Dynasty, reigning from 685 to 695 and again from 705 to 711.

Justinian II is an ambitious and passionate ruler who is keen to restore the Empire to its former glories, but he responds poorly to any opposition to his will and lacks the finesse of his father, Constantine IV.

Consequently, he generates enormous opposition to his reigns, and it results in his deposition in 695 in a popular uprising, and he only returns to the throne in 705 with the help of a Bulgar and Slav army.

His second reign is even more despotic than the first, and it too sees his eventual overthrow in 711, abandoned by his army who turn on him before killing him.