Fiona Johnston (born 3 February 1966) is a British rower.

[1] Johnston was part of the coxless pairs crew, with Belinda Holmes that won the national title rowing for a Marlow and Weybridge Ladies composite, at the 1985 National Rowing Championships.

[2] She represented England and won two silver medals in the coxless pair with Pauline Bird and the eight, at the 1986 Commonwealth Games in Edinburgh, Scotland.

She competed in the women's coxed four with Joanne Gough, Kate Grose, Susan Smith and Alison Norrish finishing in sixth place.

[5] Johnston also represented Great Britain at three World Rowing Championships.