Mark Alexander Smith[1] (25 February 1960 – 2 November 2009[2]) was a British bass guitarist and record producer, who became known as a session musician for numerous artists and also as one-time bass guitarist for the mid-1980s synth-rock band, Boys Don't Cry.

Smith played bass guitar in recordings and performances with The Waterboys, Leo Sayer, Gonzales, Percy Sledge, Terry Reid, Alvin Stardust, Chris Farlowe, Patricia Kaas, Bryan Ferry, Chris Spedding, Tony O'Malley, Barbara Dickson, Shania Twain, Zoot Sims, Neneh Cherry, Lionel Richie, Ronan Keating, Malcolm McLaren, Charlotte Church, Van Morrison, George Michael and Javier Álvarez, and also produced records for young and up-and-coming British bands.

Smith was the permanent bass guitarist in The Waterboys in 2009, and a frequent performer with Tony O'Malley.

With Smith were Tony O'Malley, Mel Collins, Neil Hubbard, Adam Phillips, Andy Hamilton, Bernie Holland, Glen Le Fleur, Paddy McHugh, Dyan Birch and Frank Collins, with appearances by Eddy Armani and Franke Pharoah.

Smith died suddenly at his Battersea, London, home, in November 2009 at age 49.