TSS Scotia was a UK twin screw passenger steamship. She was launched in Scotland in 1902 for the London and North Western Railway (LNWR). In 1914, the Admiralty requisitioned her, and had her converted into an armed boarding steamer (ABS). In 1917, she was converted into a troopship. She was renamed Menevia in 1919, and passed to the London, Midland and Scottish Railway (LMS) when Britain's railways were grouped in 1923. The Isle of Man Steam Packet Company bought her in 1928, but sold her for scrap later that year.
In 1902, William Denny and Brothers of Dumbarton built a ferry for the LNWR's Irish Sea passenger services. Yard number 655 was launched on 11 January 1902 as Scotia, and completed that April. She was a sister ship for , (1900), and (1900).
Scotias registered length was , her beam was , and her depth was . Her tonnages were and . She had twin screws, each driven by a four-cylinder triple expansion engine. Their combined power was rated at 425 NHP, and gave her a speed of . The LNWR registered her at Dublin. Her UK official number was 111038, and her code letters were THVK.
Scotia was equipped with submarine signalling by 1910, and wireless telegraphy by 1912. By 1914, her call sign was GRW.
On 8 August 1914 the Admiralty requisitioned Scotia. She was converted into an ABS for the North Channel Patrol, based at Ayr. On 1 August 1917 she was released from patrol service. She was converted into a troop ship, for carrying British Expeditionary Force troops between Dover and France. On 18 July 1918, she was damaged by bombing at Calais.
In 1920 Scotia was refitted. She was renamed Menevia, which is a Latin name for St Davids in Wales. This allowed the LNWR to re-use her old name for a new .
In 1923, the LNWR was absorbed into the new LMS Railway, and Menevia became part of the new company's fleet. The Isle of Man Steam Packet Company bought her in 1928, but then sold her on to Thos. W. Ward to be broken up. She arrived at Ward's breaking yard in Barrow-in-Furness on 21 November 1928.