Ariel Graziani (born June 7, 1971 in Empalme , Argentina) is a naturalized Ecuadorian striker for Club Atlético Lanús of the Argentinean First Division.

Graziani has been a top goalscorer for practically every team for which he has played. He made his professional debut in 1993 with Newell's Old Boys of Argentina, where he was teammates with Diego Maradona until he transferred later that year to Sport Boys of the Peruvian first division .

Graziani transferred to the Ecuadoran first division to play for Aucas in 1995, and moved a year later to join Emelec . During his two years with Emelec, 1996 and 1997, he led the league in scoring while helping Emelec earn league titles. His standout play earned him a transfer to Morelia of the Mexican First Division. Again he was one of the top goalscorers for his club and the league.

In 1999, Ariel was acquired by Major League Soccer (MLS) for a transfer fee of slightly less than $2 million, which at the time was the highest transfer fee ever paid by the league. Graziani was allocated to New England Revolution but played in only 3 games for the Revolution before he was traded to the Dallas Burn for Colombian international Leonel Alvarez.

Ariel was the leading goalscorer for the Burn in 2000 and 2001 until he was traded to the San Jose Earthquakes for El Salvadorian international Ronald Cerritos. In 2002 with the Earthquakes, Graziani, while the team's leading goalscorer, failed to connect adequately with strike partner Landon Donovan. MLS loaned out the final year of his contract. A bidding war between Emelec and Barcelona SC insued where, in the end, Barcelona offered MLS more money.

In 2003, Graziani, was the top scorer in Ecuador with Barcelona SC. He also scored what was voted the top goal in that year's Copa Libertadores against the eventual winners Boca Juniors. In 2004, he signed with Lanús in Argentina.

Graziani has played in 33 games for the Ecuadoran National Team during his career, scoring 15 goals for his adopted country.