Everdien Flora Lagerwerf-Vergunst (born May 23, 1964 in Ede) is a Dutch judge and former politician and educator.
As a member of the ChristianUnion (ChristenUnie) she was a member of the Senate from 2007 to 2011.
Lagerwerf-Vergunst studied law at Erasmus University Rotterdam.
She lives in Ridderkerk, where she was politically active for the Reformatory Political Federation, a predecessor of the ChristianUnion.
She is a member of the Protestant Church in the Netherlands, of which her father is a minister.