Member of the European Parliament, 2014–present

Schreijer-Pierik was elected to the European Parliament in May 2014 as a CDA lijstduwer thanks to her 113,123 preference votes.^[2][3] A member of the European People's Party Group, she served on the Committee on the Environment, Public Health and Food Safety from 2014 until 2019 before moving to the Committee on Agriculture and Rural Development and the Committee on Fisheries. In addition to her committee assignments, Schreijer-Pierik is part of the Parliament's delegation to the ACP–EU Joint Parliamentary Assembly and the MEPs Against Cancer group.^[4]

She became less active in the European Parliament due to heart issues, and colleagues such as Bert-Jan Ruissen (SGP) often spoke on her behalf in debates. Schreijer-Pierik decided not to run for re-election in June 2024. In an interview with Nederlands Dagblad, she described her doubts in remaining a member of the CDA, saying that she had been unable to defend her party's agricultural compromises in the coalition agreement of the fourth Rutte cabinet. She had supported the switch to the Farmer–Citizen Movement (BBB) of her former assistant Sander Smit. Schreijer-Pierik said she desired a merger between the CDA, BBB, and NSC – the latter two having been founded by former CDA members in recent years.^[2]