Arcadio Arellano (13 November 1872 – 20 April 1920) was a Filipino architect who was considered a pioneer during his time.

In all his works, he departed from American and European designs and instead incorporated Filipino native plants and motifs.

On 15 February 1907, he represented the district of Santa Cruz in the advisory board of Manila, holding the position until 1 July 1908.

On 8 October 1915, he was tasked by the government to prepare the plans and specifications for the construction of a monument for the heroes of 1896 under Act 2494.

Among the important ordinances he helped draft while being both adviser and councilman were the following: He took part in preparing the building code for Manila and worked with Sergio Osmeña in planning the construction of a monument for Filipino heroes.

They had nine children, namely: Luis, Araceli, Natividad, Irma, Friné, Arturo, Raul, Otilio, and Elsa.