noun
Refers to a person who holds a record, especially in sports or competitions.
彼は100メートル走の記録保持者だ。
He is the record holder for the 100-meter dash.
記録 means 'record' (the data or achievement), while 記録保持者 specifically refers to the person who holds that record.
Compound of 記録 (record) + 保持 (hold, maintain) + 者 (person).