Theo Upt Hiddema (born 1 April 1944) is a Dutch lawyer, media personality and politician who served as a member of the House of Representatives from 2017 to 2020.

[5] Hiddema became known as a lawyer in several famous cases, one against Florentine Rost van Tonningen-Heubel, the widow of a Dutch national-socialist during World War II, and the case against the violent and criminal Venlo Gang.

[5] In 2016, Hiddema joined Forum for Democracy (FvD, Dutch: Forum voor Democratie),[5] and was officially allocated a spot high on the electoral roll, second only to the founder and leader of the party, Thierry Baudet.

[5] In November 2020 Hiddema resigned as member of parliament due to "personal circumstances", possibly related to controversies within the party during that time.

[2] In December 2020, Hiddema expressed his willingness to stand again as a candidate for the party in March.