1. Lord Chamberlain's Men: This theatre company was formed in 1594 and was one of the most prominent acting companies in London at the time. Shakespeare joined the Lord Chamberlain's Men around 1594 and became a shareholder in the company by 1596. The company was renamed the King's Men after the accession of James I in 1603.
2. The Globe Theatre Company: The Globe Theatre was built in 1599 and became the primary theatre where the Lord Chamberlain's Men and later the King's Men performed. Shakespeare was one of the principal shareholders in the Globe Theatre and wrote many of his plays specifically for performance at the theatre.
Shakespeare's association with these theatre companies allowed him to showcase his talents as a playwright, actor, and shareholder, and contributed to his success and recognition as one of the greatest dramatists in history.