Marcelo Ricardo Fronckowiak (born 14 March 1968) is a Brazilian professional volleyball coach and former player.
Fronckowiak began his coaching career in 2002, leading Sport Club Ulbra to the Brazilian Champion title next year and the 2nd place in 2004.
During his work in France with Tourcoing LM, he won the CEV Challenge Cup bronze medal, and ended the 2008–09 season in 2nd place, losing the final matches to Paris Volley.
He came back to his native country in 2009 as a head coach of Minas Tênis Clube, and won a bronze medal in 2012.
In 2017, he became an assistant of Renan Dal Zotto in the Brazil national team, just before being dismissed from Vôlei Canoas, probably due to reduced budget for a new season.