Jarkko Samuli Ruutu (Finnish pronunciation: [ˈjɑrk:o 'sɑmuli ˈruːtu]); born 23 August 1975) is a Finnish former professional ice hockey forward who played in the National Hockey League (NHL) with the Vancouver Canucks, Pittsburgh Penguins, Ottawa Senators and Anaheim Ducks.

During the 2004–05 NHL lockout, he returned to play for HIFK and set a SM-liiga record for penalty minutes in a single season with 215 (since broken by Matt Nickerson).

In his final season in the NHL, Ruutu played out remainder of his contract with the Ducks, appearing in 23 games for a goal and assist.

He completed his professional career playing four games with EHC Biel in the Swiss National League A (NLA) during the 2014–15 season before announcing his retirement as a player on 15 December 2014.

At the 2004 World Cup, Ruutu helped Finland to a second-place finish, losing the championship game to Canada.

His younger brother, Tuomo Ruutu, also played in the NHL, appearing in more than 700 games, and was mostly recently active with HC Davos in the Swiss NLA.