Youssef Aftimus (Arabic: يوسف أفتيموس; 25 November 1866 – 10 September 1952) was a Lebanese civil engineer and architect who specialized in Moorish Revival architecture.

[3] Youssef Aftimus was born on November 25, 1866, to a Greek Catholic family in the historic town of Deir el Qamar.

[6] In 1893 Aftimus worked for a pioneer in Moorish revival architecture and was chosen to design the "Persian Palace", "Turkish Village" and "Cairo Street" pavilions for the 1893 World's Columbian Exposition in Chicago.

[5][7] Aftimus went on to work on the Egyptian pavilion at the Antwerp International Exposition of 1894 and the following year he went to Berlin on an extensive research trip on construction engineering before returning to Beirut in late 1896.

Aftimus won the design competition for Beirut's City Hall in 1923, the municipal building still stands at Weygand and Foch crossroad.

[5] The Barakat mansion also known as the "Yellow House" was designed by Aftimus and was slated for demolition in 1997 since it was heavily damaged during the Lebanese Civil War.

It was saved by Lebanese activists (particularly the architect Mona Hallak) who had articles about the mansion published in the press almost on a daily basis, wrote petitions, and organized rallies in front of the building.