claimant

/K L EY1 M AH0 N T/
noun
  1. 1

    One who claims; one who makes a claim.

  2. 2

    A person receiving money from the government, in a form of unemployment benefits, disability benefits or similar.

  3. 3

    The party who initiates a lawsuit before a court.

Source: https://en.wiktionary.org/wiki/claimant