Denaun Porter (born December 7, 1978), also known as Denaun and Mr. Porter, is an American rapper and record producer.

Porter was an original member of the Detroit hip hop group D12.

Throughout his career he has both produced and performed vocally, producing songs for many notable artists such as Eminem, Busta Rhymes, Snoop Dogg and 50 Cent (produced the song "P.I.M.P.").

Denaun is Eminem's current hype man after the death of D12 band member Proof.

Porter was a co-executive producer, with Eminem, for Bad Meets Evil's debut album Hell: The Sequel. He also has a cameo appearance in their music video "Fast Lane" as well as "Forever" by Drake, Kanye West, Lil Wayne and Eminem, and "No Love" by Eminem and Lil Wayne.

Denaun is planning to release his debut studio album The Memo in 2012.

On March 24, 2012, Porter announced through Twitter that he had left D12. He said that he wanted to focus on being a solo artist, but clarified that he holds no animosity toward other members of the group.

Mister, usually written in its abbreviated form Mr or Mr. (American English), is a commonly used English honorific for men under the rank of knighthood. The title derived from master, as the equivalent female titles, Mrs., Miss, and Ms, all derived from the archaic mistress. The title master was retained and used for boys and young men, but is now less commonly used. The plural form is Misters, or the abbreviation Messrs (UK) or Messrs. (US) ( /ˈmɛsərz/). This is an English abbreviation of the French "messieurs" (French pronunciation: [mesjø]), sometimes pronounced /ˈmɛsərz/ in English.

When addressing someone directly: Mr. is usually used with the last name only ("May I help you, Mr. Thompson?"). In other circumstances, it can be used with either the last name or the full name ("This is Mr. John Smith."; "Would you please help, Mr Smith?"). In formal written address, it is usually used along with the full name, or with initials and surname.

When a man's name is unknown, "mister" is sometimes used informally by itself in direct address, as in, "Hello, mister," or "Are you all right, mister?" rather than the standard form of address, "Sir". Though not necessarily meant disrespectfully, such use may to some people seem rude.