An important person — a key figure who plays a significant role in an organization or event.
犯罪捜査では重要人物の証言が鍵になる。
In a criminal investigation, the testimony of a key person becomes crucial.
来賓には重要人物が多数含まれていた。
Many important persons were among the guests.
会社の重要人物と面会する機会を得た。
I had the opportunity to meet a key person in the company.
会議には数名の重要人物が出席した。
Several important figures attended the meeting.