Sebastián Ariel Lomónaco (born 17 September 1998) is an Argentine professional footballer who plays as a forward for Greek Super League club Panetolikos, on loan from Godoy Cruz.

[1] Lomónaco started his professional career in 2016, making his debut on 18 December for Arsenal de Sarandí in a Primera División match against Vélez Sarsfield.

[1][5] In June 2019, after scoring seven goals in thirty-six matches for Arsenal de Sarandí, Lomónaco agreed to a move to Godoy Cruz.

[7] To gain more playing time, Lomónaco was loaned out to his former club, Arsenal de Sarandí, in January 2022 until the end of the year.

[10] The following season, he was loaned to Greek club Panetolikos on a one-year deal with an option to buy.