Preemption or pre-emption may refer to:

  • FDA preemption, legal theory in the United States that exempts product manufacturers from tort claims regarding Food and Drug Administration approved products
  • Federal preemption, displacement of U.S. state law by U.S. Federal law
  • Pre-emption rights, the right of existing shareholders in a company to buy shares offered for sale before they are offered to the public <!-- Please do not remove the hyphen or modify the entry (Pre-emption rights), it has multiple backlinks and this is the form used in US legal documents. -->
  • Preemption (land), a type of land transfer in the United States, as in the Preemption Act of 1841
  • Preemption Line, the line dividing Indian lands awarded to New York, from those awarded to the Commonwealth of Massachusetts in 1786
  • State preemption, displacement of U.S. municipal law by state law

Other

  • Preempt, a type of bid and a bidding tactic in contract bridge
  • Preemption (computing), the interruption of a computer process without its cooperation in order to perform another task
  • Preemption, Illinois, a CDP in the township
  • Preemption Township, Mercer County, Illinois
  • Preemptive war or preemptive strike
  • Traffic signal preemption
  • Preemption (media), also known as a blackout in broadcasting