Larson Giovanni Diaz Martinez (born 23 March 1994 in Santa Rosa, Misiones Department, Paraguay)[1][2] is a Paraguayan javelin thrower.

[6] At the 2015 National Senior Championships , he finished 2nd with 72.40m in Javelin and achieved the result for the Pan American Games in Canada.

[7] Díaz represented Paraguay at the 2015 South American Championships in Athletics disputed in Lima in June 2015.

Díaz finished in fifth position having thrown 70.52 metres, surpassing compatriot and 2008 Summer Olympics Paraguay representative Victor Fatecha.

[9] IAAF Profile[10] and Federación Paraguaya de Atletismo[11] Since the scholarship, he lives at the residence of the Paraguayan Olympic Committee ubicated in the city of Luque.