Ilkka Tapani Alanko (born 21 November 1969) is a Finnish musician. He is a lead vocalist, co-founder, songwriter, and guitarist for the Finnish rock band Neljä Ruusua. Alanko's debut solo album Elektra was released in 2009, and it peaked at number seven on the Finnish Albums Chart.

Alanko is also a founder of the eponymous ensemble Ilkka Alanko Orchestra. In 2010, the orchestra released its debut album Ruusuja, which also spawned a television documentary Ilkka Alanko Orchestra – Poplaulajan työpäivä.

In 2010, Alanko won the talent show Kuorosota, the Finnish version of Clash of the Choirs, with his choir.