The Grand Hotel is a historic hotel and coastal resort located on Mackinac Island, Michigan, a small island located at the eastern end of the Straits of Mackinac within Lake Huron between the state's Upper and Lower Peninsulas. Constructed in the late 19th century, the facility advertises itself as having the world's largest porch. The Grand Hotel is well known for a number of notable visitors, including five U.S. presidents, Russian prime minister Vladimir Putin, Russian president Dmitri Medvedev, inventor Thomas Edison, and author Mark Twain.

Mackinac (/ˈmækɨnɔː/ MAK-in-aw) is a small island, 3.776 square miles (9.780 km2) in land area, in the U.S. state of Michigan. It is located in Lake Huron, at the eastern end of the Straits of Mackinac, between the state's Upper and Lower Peninsulas. The island was a Native American settlement before European exploration began in the 17th century. It served a strategic position amidst the commerce of the Great Lakes fur trade. This led to the establishment of Fort Mackinac by the British during the American Revolutionary War. It was the scene of two strategic battles during the War of 1812.

In 1886, the Michigan Central Railroad, Grand Rapids and Indiana Railroad, and Detroit and Cleveland Steamship Navigation Company formed the Mackinac Island Hotel Company. The group purchased the land on which the hotel was built and construction began, based upon the design by Detroit architects Mason and Rice. When it opened the following year, the hotel was advertised to Chicago, Erie, Montreal and Detroit residents as a summer retreat for vacationers who arrived by lake steamer and by rail from across the continent. At its opening, nightly rates at the hotel ranged from US$3 to US$5 a night.

Grand Hotel's front porch is purportedly the longest in the world at some 660 feet (200 m) in length, overlooking a vast Tea Garden and the resort-scale Esther Williams swimming pool. These areas are often used by guests on a casual family vacation, for large conventions, or concerts during the hotel's annual Labor Day Jazz Festival. The hotel has drawn some criticism for its charging a $10 fee for non-guests to enter the building and enjoy the view from the famous porch.

A Full View of Grand Hotel From Lake Huron
Five U.S. Presidents have visited: Harry Truman, John F. Kennedy, Gerald Ford (raised in Michigan), George H.W. Bush and Bill Clinton. The hotel also hosted the first public demonstration of Thomas Edison's phonograph on the porch and regular demonstrations of other new inventions were often conducted during Edison's frequent stays. Mark Twain also made this a regular location on his speaking tours in the midwest.

In May each year, the Grand Hotel serves as the headquarters for the Detroit Regional Chamber of Commerce's Mackinac Policy Conference that attracts politicians, businessmen and labor leaders from across the state and the northern midwest region.