Juan Marcos Arellano y de Guzmán (April 25, 1888 – December 5, 1960), or Juan M. Arellano, was a Filipino architect, best known for Manila's Metropolitan Theater (1935), Legislative Building (1926; now houses the National Museum of Fine Arts), the Manila Central Post Office Building (1926), the Rizal Memorial Sports Complex (1934), the Central Student Church (today known as the Central United Methodist Church, 1932), the old Jaro Municipal Hall (1934) and the Old Iloilo City Hall (1935) in Iloilo, the Negros Occidental Provincial Capitol (1936), the Cebu Provincial Capitol (1937), Dumaguete Presidencia (1937), the Bank of the Philippine Islands Cebu Main Branch (1940), Misamis Occidental Provincial Capitol Building (1935), Cotabato Municipal Hall (1940) and the Jones Bridge during the pre-war era.

Arellano went to the Pennsylvania Academy of the Fine Arts in 1911 and subsequently transferred to Drexel to finish his bachelor's degree in Architecture.

Post & Sons in New York City, where he worked for Frederick Law Olmsted Jr.[2] He then returned to the Philippines to begin a practice with his brother, Arcadio.

[3] He continued to act as a consulting architect for the Bureau of Public Works where he oversaw the production of the Manila's first zoning plan.

He designed a demesne along the edge of Manila Bay, which featured a mission revival style mansion that took advantage of the seaside vista.