David Gillick (born 9 July 1983, in Dublin) is an Irish international track and field athlete.

He studied at Dublin Institute of Technology before moving to Loughborough University in the United Kingdom to train as a full-time athlete with coach Nick Dakin.

At the 2004 IAAF World Indoor Championships Gillick won a bronze medal as part of the Irish 4x400 metres relay team (along with Robert Daly, David McCarthy and Gary Ryan).

On 4 July 2009 Gillick won at the Meeting de Madrid, which is part of the IAAF World Athletics Tour.

At the World Athletics Championships in Berlin in August 2009, Gillick qualified for the semi-finals of the men's 400 m after he finished second in his heat in a time of 45.54.

[1] In the semi-final Gillick placed fourth in a time of 44.88, which was good enough to make the World Championship final as the second fastest loser.

In the 2010 IAAF World Indoor Championships Gillick was the second fastest qualifier in both the heats and semi-finals but finished 5th in the final and was later disqualified as a result of a collision with the American Bershawn Jackson with 200 metres to go.