Luciana Diniz (born 11 October 1970 in São Paulo, Brazil) is a Brazilian-born Portuguese equestrian whose discipline is show jumping.
She currently ranks thirteenth on the FEI Rolex Ranking List.
In addition to her show jumping work, Diniz is also known for G.R.O.W., an "informal education philosophy" that teaches adults and children.
She is also started a documentary series on her horses called the Hoofprint Series.
Luciana went to the 2016 Olympic Summer Games in Rio de Janeiro as an individual competitor for Portugal with Fit For Fun.