Lake Flower is a 300-acre (120 ha) lake in Franklin County and Essex County in the Adirondack Mountains of Upstate New York in the United States.

It was originally called the Mill Pond, but was later named for New York Governor Roswell P. Flower.

The village and the lake are divided between the towns of Harrietstown and North Elba.

It is the site of the annual Willard Hanmer Guideboat & Canoe Race held each July in Saranac Lake since 1962; it is a race of ten miles (16 km), for guideboats, canoes and kayaks.

Lake Flower is the source of ice for Saranac Lake's Ice Palace, built each year during Winter Carnival.