claimant
noun [ C ]
/ˈkleɪmənt/ ukus INSURANCE
a person or company that requests or receives payment from an insurance company for an accident, illness, damage to property, etc.:
For medical malpractice insurance claims that we paid, fewer than 10% had a payout of $1 million or more.
a person who requests or receives payment of money that a government, organization, or company owes them:
Tax credit payments are calculated according to the claimant's yearly income.
LAW (also plaintiff)
a person who goes to court to make a legal complaint against someone else:
The claimant commenced this action to recover damages that were sustained while working for the defendant.
LAW
someone who demands the right to be the legal owner of a particular property, payment, or title:
He was declared the legitimate claimant to the throne.