Cornelis "Kees" Boertien (26 July 1927 – 30 May 2002) was a Dutch politician of the defunct Anti-Revolutionary Party (ARP) and later the Christian Democratic Appeal (CDA) party and jurist.
Boertien attended a Gymnasium in Zwolle from April 1939 until May 1946 and applied at the Utrecht University in June 1946 majoring in Law and obtaining a Bachelor of Laws degree in July 1948 and worked as student researcher before graduating with a Master of Laws degree on 13 December 1952. Boertien worked as an office clerk for a printing office in Zwolle from June 1946 until August 1947 and for an insurance company in Utrecht from August 1947 until December 1952. Boertien worked as an accountant for the Institute of Registered Accountants from December 1952 until September 1960. Boertien worked as a paralegal for Philips in Eindhoven from September 1960 until October 1965. Boertien applied at the Free University Amsterdam in July 1958 for a postgraduate education in Law and worked as a researcher