A participant is someone who takes part in an activity, event, or process. A SHAREHOLDER is a person who owns shares in a company and has certain rights and responsibilities. A PARTICIPATOR is someone who takes part in an activity, event, or process. A SHARER is someone who divides something with others. A FELLOW is a person who is associated with another or others in a common activity or purpose. A PARTNER is someone who takes part in a particular activity or relationship with another or others. A PARTY is a person or group taking part in an activity or event. A MEMBER is someone who belongs to a group or organization. An ACTOR is someone who performs in a play, movie, television show, or other production. An ATTENDEE is someone who is present at an event or meeting. A PLAYER is someone who takes part in a game or sport. An ENTRANT is someone who takes part in a competition or contest. An ENTRY is something that is entered in a competition or contest.