Henry Bacon (November 28, 1866 – February 16, 1924) was an American Beaux-Arts architect who oversaw the engineering and design of the Lincoln Memorial in Washington, D.C., built between 1915 and 1922, which was his final project before his 1924 death.

Bacon was born in Watseka, Illinois. He studied briefly at the University of Illinois, Urbana, in 1884, but left to begin his architectural career as a draftsman.

Bacon initially worked in the office of McKim, Mead & White in New York City, one of the best-known architectural firms at the time. His works of that period were in the late Greek Revival and Beaux-Arts styles with which the firm was associated. They included the 1889 World Expo in Paris, Boston Public Library in Boston, the New York Herald Building, Harvard Club of New York City, Columbia University's Morningside Heights campus, and Pennsylvania Station, each in New York City, and the World's Columbian Exposition in Chicago in 1893.

While at McKim, Mead & White, Bacon won, in 1889, the Rotch Traveling Scholarship for architectural students. This gave him two years of study and travel in Europe, which he spent learning and drawing details of Roman and Greek architecture. In Turkey, he met his future wife, Laura Florence Calvert, daughter of a British consul. He traveled with another fellowship student, Albert Kahn from Detroit, Michigan, who also went on to become a leading industrial architect.

After returning to the U.S., Bacon worked for a few more years with his mentor, Charles McKim, including on such projects as the Rhode Island State House in Providence, Rhode Island. He served as McKim's personal representative in Paris during the World Exposition in 1889 and in Chicago for the World's Columbian Exposition in 1893, for which McKim, Mead & White was designing several buildings.

In 1897, Bacon left with James Brite, a younger architect from the firm, to found the partnership of Brite and Bacon Architects. Brite was in charge of financial, administrative, and contracting aspects of the partnership, while Bacon was in charge of the architectural design and construction. The partnership immediately won the competition for the Jersey City, New Jersey's public library and the Hall of History (now Hurst Hall) for American University in Washington, D.C. They built a number of public buildings and a small number of private residences, which most notably included La Fetra Mansion in Summit, New Jersey.

The partnership was selected in 1897 to build three private residences: La Fetra Mansion; Laurel Hill, a three-story Georgian mansion in Columbia, North Carolina; and Donald McRae House in Wilmington, North Carolina. The La Fetra Mansion was designed and built by Bacon, and his design was published in the September 1901 issue of Architecture, the preeminent architectural professional journal of its time. The LeFetra Mansion fully exhibits Bacon's preference for Beaux-Arts Neo-Greek and Roman architectural styles. His simple and elegant lines, and his skill in dimensions and proportions, were described as expressing a stately elegance, peaceful tranquility, and sense of divine protection.

In 1897, following the assassination of Abraham Lincoln, Bacon was also approached by a group, which had organized to raise public and private funds to build a monument in Washington, D.C., to memorialize President Abraham Lincoln. Bacon began his conceptual, artistic, and architectural design for the Lincoln Memorial that year. He continued in the effort, although the funding to build the project was not secured until years later. The Brite and Bacon Partnership dissolved in 1902, partly resulting from Brite's disagreement over Bacon's passion and the unpaid time he spent on the memorial design.