HMHS Lanfranc was a Booth Line passenger steamship that was built in Scotland in 1907 and operated scheduled services between Liverpool and Brazil until 1914. In the First World War she was a hospital ship until a U-boat sank her in the English Channel in 1917.

This was the second Lanfranc in Booth's fleet. The first was an iron-hulled steamship that was built in 1884, sold in 1898 and renamed Olympia.

Booth's operated scheduled cargo liner and passenger services between Europe and Brazil. In the first decade of the 20th century these services included regular sailings between Liverpool and Manaus, 1,000 miles (1,600 km) up the Amazon River. A Booth passenger ship would leave Liverpool for Manaus on or about the 10th, 20th and 30th day of each month.

Lanfranc was the first Booth ship with twin screws. Each screw was driven by a three-cylinder triple-expansion engine. Between them the two engines were rated at 850 NHP and gave her a speed of 12 knots (22 km/h; 14 mph).

The Caledon Shipbuilding & Engineering Company of Dundee built Lanfranc for £122,000. She was launched on 18 October 1906 and completed in February 1907. She was registered in Liverpool. Her UK official number was 124034 and her code letters were HKDM.

Lanfranc was joined by two sister ships. R&W Hawthorn, Leslie and Company launched Antony on 11 November 1906 and completed her in February 1907. Caledon Shipbuilding and Engineering launched Hilary on 31 March 1908 and completed her that August.

Lanfranc's tonnages were 6,275 gross register tons (GRT) and 3,655 net register tons (NRT). She and her sisters were the largest ships in Booth's fleet until Scotts Shipbuilding and Engineering Company launched Hildebrand in 1911.

By 1911 Lanfranc had a wireless telegraphy installation aboard, operated by the Marconi Company. Her call sign was MDS.