Walter Nicolás Otta (born 12 December 1973) is an Argentine retired football striker and currently the manager of Atlético de Rafaela.
Otta was born in Río Tercero, Córdoba, and started his career with Villa Dálmine in the lower leagues of Argentine football in 1993.
He played in Peru with Universidad San Martín and then for Manta Fútbol Club in Ecuador.
Otta started his coaching career in September 2010, becoming manager of his former club Villa Dálmine.
[2] He left the club in August 2015 and one month later became manager of Unión de Mar del Plata.