Ramon Kaju (born 19 February 1973 in Viljandi) is a retired Estonian high jumper and decathlete.
He finished tenth at the 1998 European Indoor Championships.[1] He also competed at the 1998 European Championships without reaching the final.
His personal best jump is 2.28 metres, achieved in August 1998 in Haapsalu.[1] His personal best in decathlon was 7608 points achieved in 1997.[2]
In 2000–2001 he played basketball in Estonian League team Nybit.[3]