Alfons "Fons" Remi Emiel, Viscount Verplaetse (19 February 1930 – 15 October 2020) was a Belgian economist who served as Governor of the National Bank of Belgium (NBB) from 1989 until 1999.

After he graduated in commercial sciences from the Catholic University of Leuven, Alfons Verplaetse started his career at the National Bank in 1953, where he worked at the Research department.

Together with Jacques van Ypersele de Strihou, he was one of the architects of the economic recovery policy launched by the February 1982 devaluation of the Belgian franc.

[3] The plan was mainly conceived by four people meeting in Verplaetse's holiday residence in Poupehan [nl], a tiny village in the Ardennes.

[1] Verplaetse was supposed to retire in 1997, but remained in office until 1999 to oversee the introduction of the euro to replace the Belgian franc, on 1 January 1999, as the official currency of Belgium.