Rainier Beach station is a light rail station in Seattle, Washington. It is between the Tukwila International Boulevard and Othello stations on the 1 Line. The line runs from Seattle–Tacoma International Airport to Downtown Seattle and the University of Washington as part of the Link light rail system. The station consists of an at-grade island platform south of South Henderson Street in the median of Martin Luther King Jr. Way in the Rainier Beach neighborhood, part of Seattle's Rainier Valley.

The 1 Line, formerly Central Link, is a light rail line in Seattle, Washington, United States, and part of Sound Transit's Link light rail system. It serves 19 stations in the cities of Seattle, SeaTac, and Tukwila, traveling nearly 25 miles (40 km) between Northgate and Angle Lake stations. The line connects the University District, Downtown Seattle, the Rainier Valley, and Seattle–Tacoma International Airport. The 1 Line carried over 26 million total passengers in 2023, with an average of nearly 80,000 daily passengers on weekdays. It runs for 20 hours per day on weekdays and Saturdays, with headways as low as six minutes during peak hours, and reduced 18-hour service on Sundays and holidays.