Diego Lochness Santos Oliveira (born 11 February 1987) is a Brazilian footballer who plays as a forward or midfielder.
Oliveira started his professional career at Italian Serie A side Chievo. In July 2005, he was loaned to Padova of Serie C1.
He left for Serie C1 side Cittadella on 4 July 2007 on loan with option to sign him in co-ownership deal in the next season. He won promotion playoffs with club in 2008 and promoted to Serie B. He continued to play as a substitute player after the club purchased him for â¬500.
On 26 June 2009, Chievo bought him back for an undisclosed fee, but on 24 July 2009 returned to Cittadella in another co-ownership deal for â¬500. Cittadella later signed Antimo Iunco on loan and signed Oliveira outright ; it sold Manuel Iori to Chievo in co-ownership deal. Oliveira started 13 Serie B matches and also played 10 league matches as substitute.
On 1 July 2010, he was signed by fellow Serie B side Vicenza in 3-year contract, for â¬130,000 (direct swap with Julián Magallanes who tagged for â¬130,000).
On 27 January 2011, he mutually terminated his contract to return to Brazil.
On 9 August 2011 he accepted to play in Serie D for Venezia thanks to the insistence of the Director of Football Oreste Cinquini, who previously took Oliveira in Italy when he was only thirteen.