Joonas Lehtivuori (born July 19, 1988) is a Finnish professional ice hockey defenceman.

[1] He left Ilves on April 27, 2009, and joined the National Hockey League (NHL) club Philadelphia Flyers.

However, in the 2009–10 season, Lehtivuori was assigned to the Adirondack Phantoms, the Flyers' relocated team affiliate, of the American Hockey League (AHL).

[3] On August 18, 2011, Lehtivuori signed a one-week try-out contract with the Modo Hockey of the Elitserien (SEL).

[4] Lehtivuori played three seasons with HPK in the Liiga, before opting to leave as a free agent to sign a two-year contract with German outfit, Adler Mannheim of the DEL, on April 13, 2018.