Marriott Gateway on the Falls Hotel, 32-floor hotel in Niagara Falls, Canada.

Niagara Falls Marriott on the Falls is a 335-foot (102 m) hotel on Fallsview Boulevard in Niagara Falls, Ontario. It opened in 1993 as a 20-story Sheraton and gained floors 22–31 in a 2000 expansion. Two rooms on the 32nd floor are used only when the hotel is full or by request.

The hotel opened in 1993 as the 20-story Sheraton Fallsview Hotel, one of the original Fallsview properties. In 2000 it was expanded with floors 22 to 31. It left Sheraton for Marriott in 2011, becoming the Marriott Gateway on the Falls, and took its current name in 2017.

The hotel's name changed with its brand: Sheraton Fallsview until 2011, then Marriott Gateway on the Falls, and since 2017 Niagara Falls Marriott on the Falls. It was among the first Fallsview hotels, a group whose name now labels the surrounding district and its casino resort. Guests on the upper floors look down on the falls that gave the hotel its original name.

The hotel stands at 6755 Fallsview Boulevard, within walking distance of the Fallsview Casino Resort and the Marriott Niagara Falls Hotel Fallsview & Spa. Its 335-foot height makes it visible across the tourist district, so it works as a landmark for orientation. Guests on the 32nd floor are housed only when the hotel is full or on request.

The hotel hosted the first webcam overlooking Niagara Falls, installed in 1998 on what was then the top floor, before the 2000 expansion added floors 22–31. It was replaced in 2012 during a $15 million renovation begun in 2011. Two rooms on the 32nd floor are used only when the hotel is full or on request.