Derk Jan Eppink (born 7 November 1958) is a Dutch journalist, politician in the Netherlands, and former cabinet secretary for European Commissioners Bolkestein (1999–2004) and Kallas (2004–2007).

He wrote two books on his experiences in Belgian politics: Vreemde Buren (Odd neighbors), Avonturen van een Nederbelg (Adventures of a Nether-Belgian).

In October 2004 Eppink joined the cabinet of Siim Kallas, European Commissioner from Estonia, responsible for administration, audit and anti-fraud.

[4] In an article in November 2013, Eppink made the point that fiscal consolidation in Ireland had worked well, and that the breakdown in Greece could not be blamed on so-called 'austerity'.

[5] Not re-elected in 2014, in July 2019 he was elected a member of the European Parliament for the Dutch right wing party Forum for Democracy (FvD).

[7] Eppink signed the Madrid Charter, a document drafted by the far-right Spanish party Vox that describes left-wing groups as enemies of Ibero-America involved in a "criminal project" that are "under the umbrella of the Cuban regime".