Giovanni Guidetti (born September 20, 1972) is an Italian volleyball coach, currently head coach of VakıfBank S.K. women's volleyball team in Turkey. Known for his tactical discipline and youth development, he led the Netherlands women's national team to fourth place at the 2016 Rio Olympics and 2018 World Championship. Guidetti has won multiple Turkish league titles, Turkish Cups, and CEV Champions League titles with VakıfBank. He is widely regarded as one of the most successful and influential volleyball coaches in the world.