Jani Lyyski (born 16 March 1983) is a Finnish former footballer.
Lyyski started his career in IFK Mariehamn he played for seven years, before moving on to Vaasan Palloseura in 2008.
On 26 November, he signed on for Swedish side Djurgårdens IF.In March 2012 Lyyski returned to IFK Mariehamn.
His father Pekka Lyyski is a former manager of IFK Mariehamn.