Mary Riggans (19 July 1935 – 2 December 2013) was a Scottish actress and singer. She was best known for playing the role of Susie Sweet in the BAFTA award winning children’s show Balamory. and Effie Macinnes in Take the High Road. She began her acting career in 1946, when she did a voiceover at the age of 11, and went on to star in television, radio and theatre productions.