Raymond III was count of Tripoli from 1152 to 1187. He was a minor when Nizari Assassins murdered his father, Raymond II of Tripoli. Baldwin III of Jerusalem, who was staying in Tripoli, made Raymond's mother, Hodierna of Jerusalem, regent. Raymond spent the following years at the royal court in Jerusalem. He reached the age of majority in 1155, after which he participated in a series of military campaigns against Nur ad-Din, the Zengid ruler of Damascus. In 1161 he hired pirates to pillage the Byzantine coastline and islands to take vengeance on Byzantine emperor Manuel I Komnenos, who had refused to marry his sister Melisende. He was captured in the Battle of Harim by Nur ad-Din's troops on 10 August 1164, and imprisoned in Aleppo for almost ten years. During his captivity, Amalric I of Jerusalem administered the county of Tripoli on his behalf.

Raymond II was count of Tripoli from 1137 to 1152. He succeeded his father, Pons, Count of Tripoli, who was killed during a campaign that a commander from Damascus launched against Tripoli. Raymond accused the local Christians of betraying his father and invaded their villages in the Mount Lebanon area. He also had many of them tortured and executed. Raymond was captured during an invasion by Imad ad-Din Zengi, atabeg of Mosul, who gained the two important castles of Montferrand and Rafaniya in exchange for his release in the summer of 1137.