Marriott International: The undisputed largest hotel chain in the world, featuring over 1.6 million rooms across legendary brands like Ritz-Carlton, Sheraton, and Westin.
Hilton Worldwide: The second largest by market valuation, spanning over 1.2 million rooms across brands like Waldorf Astoria, Conrad, and Hampton.
InterContinental Hotels Group (IHG): A massive global footprint of nearly 1 million rooms, anchored by Holiday Inn, Crowne Plaza, and InterContinental.
Hyatt Hotels Corporation: Considerably smaller in total hotel count (around 1,300+ properties) but fiercely loved by travelers for its high-end luxury portfolio like Park Hyatt and Grand Hyatt.
Accor: Based in France, Accor is Europe's largest hotel group. It commands over 850,000 rooms and has the most diverse lifestyle/luxury lineup, including Fairmont, Sofitel, Novotel, and Ibis.
Wyndham Hotels & Resorts: By absolute number of hotel locations, Wyndham is an absolute monster with over 9,200 properties, focusing heavily on budget and midscale travel like Days Inn, Super 8, and Ramada.
Jin Jiang International: This Chinese state-owned giant is technically the second-largest hotel group in the world by room count. It owns Radisson Hotel Group (outside the Americas) and Louvre Hotels.
H World Group (Huazhu): Another massive Chinese powerhouse that ranks ahead of IHG and Hyatt in terms of total global room capacity.