Jaroslav Kačmarčík (born 3 March 1954) is an orienteering competitor who competed for Czechoslovakia.

At the 1979 World Orienteering Championships in Tampere he won a bronze medal in the relay, together with Petr Uher, Zdeněk Lenhart and Jiří Ticháček.

[1] At the 1981 World Orienteering Championships he placed 7th in the individual contest, and fourth in the relay with the Czechoslovak team.

[2] In 1983 in Zalaegerszeg he placed 6th in the individual contest, and won a silver medal in the relay, together with Vlastimil Uchytil, Pavel Ditrych and Josef Pollák.

[3] Kačmarčík is a Park World Tour council member from year 1996.