Ari Pekka Mannio[1] (born July 23, 1987) is a retired Finnish javelin thrower.

Mannio first represented Finland internationally at the 2003 European Youth Olympic Festival in Paris, France, where he won the bronze medal.

[4] 2006 saw Mannio's first successes against adult javelin throwers, as he claimed a bronze medal at the 2006 Finnish Championships.

[6] The next year, in 2007, he again failed to claim international gold despite having the best mark coming in; entering the European U23 Championships in Debrecen, Hungary as the only man in the field to have broken 80 metres,[7] Mannio was narrowly pushed out of the medals altogether and had to be content with 4th.

[9] However, he was still only the sixth best thrower in Finland that year and was nowhere near making the three-man team for the Beijing Olympics.