The MS Jewel of the Seas is a cruise ship belonging to Royal Caribbean's Radiance class. The ship was completed in the spring of 2004 with her maiden voyage in May of that year. She is the last Radiance class ship.

Previously, Jewel of the Seas sailed 7 and 9-night cruises from Rome (Civitavecchia), Italy to the Greek Isles. In November 2016, she repositioned to cruising from San Juan, Puerto Rico with 7, 8 and 9-night Southern Caribbean voyages.
Currently, the ship operates Caribbean sailings from San Juan, Puerto Rico. From May to November 2018, she will offer various Europe sailings. From November 2018, she'll operate various Caribbean cruises.

In April 2016, Jewel of the Seas completed a bow-to-stern, 20M GBP ($30M USD) renovation that give guests new staterooms including two-bedroom family suites and 24 new balconies, three new restaurants/wine bar (Giovanni’s Table (deck 6), Vintages (deck 6), and Izumi (deck 12)), a large poolside movie screen (deck 11) and tech upgrades, including improved broadband internet service.