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Al-Harith ibn Hilliza al-Yashkuri, 5th century pre-Islamic Arabian poet •
Azazil, also known as Ḥārith, the name of Iblis before he was expelled from heaven •
Harith al-Dhari (1941–2015), an Iraqi Sunni Arab cleric •
Harith Gassani, Arab Christian governor of Sham and contemporary of Muhammad •
Harith al-Hamdani, a contemporary of Muhammad •
Harith ibn Harb, brother of the man who would be Muhammad's arch enemy, Abu Sufyan ibn Harb •
Harith Iskander (born 1966), a Malaysian actor and comedian •
Harith Lim (born 1970), a professional Singaporean darts player •
Harith Maduwantha (born 1994), a Sri Lankan cricketer •
Harith al-Muhasibi (781–857), founder of the Baghdad School of Islamic philosophy •
Harith bin Ghazi al-Nadhari (died 2015), an official of Al Qaeda in the Arabian Peninsula •
Hareth Al Naif (born 1993), a Syrian footballer •
Harith al-Obeidi (died 2009), an Iraqi politician •
Harith ibn Rab'i, one of the companions of Muhammad •
Harith al-Sudani (died 2017), Iraqi militaryman, spy and war hero •
Hareth Shanshal Sunaid, an Iraqi politician ==In fiction==