Robert Lui (born 23 February 1990) is an Australian professional rugby league footballer who plays as a five-eighth or halfback for the Townsville Blackhawks in the Queensland Cup.

He has previously played for the Wests Tigers and the North Queensland Cowboys in the NRL and the Salford Red Devils in the Super League.

[8] In March, Lui re-signed for the Wests Tigers to the end of the 2012 season, with coach Tim Sheens describing him as, "an integral part of the team.

From round 17 onward, Lui was halfback as Wests Tigers won nine games straight, eventually losing in the semi-final.

"[13] At the end of the 2011 season, Lui was released from his contract with the Wests Tigers after he was charged with assaulting his partner, Taleah Rae Backo, in her North Strathfield home.

[15] He pleaded guilty to assault occasioning actual bodily harm on his former partner and was placed on a two-year good behaviour bond and fined $2000.

The next few weeks Lui was pushed back to reserve grade to regain match fitness after his pre-season was hindered by a serious knee injury.

Lui's 2012 campaign was cut short however after being suspended from playing any form of rugby league for the rest of the season after pleading guilty to an assault charge placed against him several months earlier.

Although being suspended for a majority of the 2012 season, Lui retained his job at the North Queensland Cowboys and remained training with the club full-time for the rest of his suspension.

[24] Lui played a total of 11 games for Leeds in the 2021 Super League season including the club's 36–8 loss against St Helens in the semi-final.