Leryn Dahiana Franco Steneri (born 1 March 1982 in AsunciĆ³n) is a Paraguayan athlete who specializes in the javelin throw. Her personal best throw is 55.38 metres, achieved in May 2007 in Fortaleza.
Born in Paraguay of Uruguayan parentage she broke the national records for the under 17 year age group in 1998 for both the javelin and triple jump. After winning bronze medals in 1999 and 2000 Franco won the South American Junior Championship javelin title in 2001. Franco was South American under 23 champion in 2004.
Her performances at world level are 24th in the 2003 World Championship and 42nd out of 45 at the Athens Olympics. Although she set her personal best in 2007 she finished 12th (last) at the 2007 Pan American Games in Rio de Janeiro. In 2008, she competed in the Beijing Olympics