The 13 players named as the best in the league all hail from England for the second straight year, with the Rhinos featuring heavily.
Leeds prop Peacock - still going strong at 36 - makes it for the 10th time in his illustrious career, while team-mates, Ryan Hall, Zak Hardaker, Kallum Watkins and Carl Ablett have also been recognised, with the latter trio all appearing in the side for the first time.
Wigan Warriors captain Sean O'Loughlin makes his fifth straight appearance in a team that boasts eight debutants.
Stand-off Kevin Brown is the first Widnes Vikings player to be selected in the team after he helped his side secure a place in the play-offs.
Castleford Tigers duo Daryl Clark and Michael Shenton have been rewarded for playing a key role in the side's fourth-placed finish, and there also maiden dream-team inclusions for Elliot Whitehead of the Catalan Dragons and St Helens winger Tommy Makinson.
Super League dream team in full:
Zak Hardaker (Leeds Rhinos), Tommy Makinson (St Helens), Kallum Watkins (Leeds Rhinos), Michael Shenton (Castleford Tigers), Ryan Hall (Leeds Rhinos), Kevin Brown (Widnes Vikings), Matty Smith (Wigan Warriors), Jamie Peacock (Leeds Rhinos), Daryl Clark (Castleford Tigers), Chris Hill (Warrington Wolves), Elliott Whitehead (Catalan Dragons), Carl Ablett (Leeds Rhinos), Sean O'Loughlin (Wigan Warriors).