William Frullani (born 21 September 1979 in Prato) is a decathlete and bobsleigh competitor from Italy.

Frullani won two medals, one of these at senior level, at the International athletics competitions.

In 2009 he finished 6th at the European Indoor Championships in Turin in the heptathlon with a national record of 5972 points.

[2] He was married to his combined events fellow, the Ukrainian heptathlete Hanna Melnychenko.

[6] He tested positive for methylhexanamine at the 2014 Winter Olympics and was excluded from the Italian team.