Simon Charles Jonathan Danielli (born 8 September 1979 in Edinburgh) is a Scottish former rugby union footballer who played on the wing for Ulster and Scotland.

During his time at Oxford he was awarded two rugby union blues playing in the Varsity Match against Cambridge in 1999 and 2000.

Danielli joined The Borders from Bath in September 2004, where he had been since the summer of 2001, prior to which he played for Bristol Shoguns.

He made his international debut against Italy during the World Cup warm-up match in August 2003 scoring a try.

He struggled to regularly break into the Scottish first-fifteen due to competition from the likes of the Lamont brothers and Chris Paterson.

However, he returned to the international scene on 28 February 2009 (against Italy in the Six Nations) with a try-scoring man of the match performance.