No, Marriott International and IHG (InterContinental Hotels Group) are two separate and competing global hospitality giants. Marriott, headquartered in Maryland, USA, is currently the largest hotel company in the world, owning brands like Sheraton, Ritz-Carlton, and Westin. IHG is a UK-based company that operates its own distinct portfolio, including Holiday Inn, Crowne Plaza, and InterContinental. While Marriott has grown significantly through massive acquisitions (most notably its 2016 purchase of Starwood Hotels & Resorts), it has never owned or merged with IHG. In 2026, they remain fierce rivals, each managing their own independent loyalty programs—Marriott Bonvoy and IHG One Rewards. They compete across every service tier, from budget-friendly select-service hotels to the most exclusive luxury resorts on the planet.