Zdenko Verdenik (born 2 May 1949 in Ptuj, SFR Yugoslavia, now Slovenia) is a Slovenian football manager and former player.He coached NK Olimpija Ljubljana, U-21 Slovenia NT, Slovenia NT, FK Austria Wien, JEF United Ichihara, Nagoya Grampus Eight, Vegalta Sendai and Omiya Ardija.On 12 August 2013, Omiya Ardija sacked coach Zdenko Verdenik after a run of five defeats saw them slip from first place to fourth.