M Resort

M Resort Spa Casino
M Resort's original tower, March 2009
Interactive map of M Resort Spa Casino
Location Henderson, Nevada
Address 12300 South Las Vegas Blvd
Opening dateMarch 1, 2009 (March 1, 2009)
No. of rooms765
Total gaming space92,000 sq ft (8,500 m2)
Notable restaurants16 – A Handcrafted Experience
Anthony's Prime Steak & Seafood
Marinelli's
Raiders Tavern & Grill
Studio B (2009–2020)
Casino typeLand-based
OwnerGaming and Leisure Properties
Operating license holderPenn Entertainment
Websitethemresort.com

M Resort Spa Casino is a boutique hotel, spa, and casino in Henderson, Nevada. Located eight miles south of the Las Vegas Strip, it is the southernmost casino in the Las Vegas Valley. It is owned by Gaming and Leisure Properties and operated by Penn Entertainment.

The M is named after the Marnell family. Marnell Corrao Associates, designed and built the M Resort. Construction began on September 1, 2007, and the resort opened on March 1, 2009, amid the Great Recession. In 2010, Penn National Gaming (now Penn Entertainment) purchased $860 million in debt that the resort owed, before taking over complete ownership of the property in 2011. In 2019, the M entered a partnership with the Las Vegas Raiders football team, which now rents out the hotel before games.

The M opened with a 92,000 sq ft (8,500 m2) casino and a 16-story tower with 390 rooms. A second tower opened in late 2025, bringing the room count to 765.