Ronald Scott Alexander MacKenzie (born 21 February 1972) is a former professional darts player based in Hong Kong.

[6] In the rest of 2012 he lost in the quarter-finals of the Pacific Masters to Tony Carmichael and was also defeated in the semi-finals of the WDF Asia-Pacific Cup and Hong Kong Open.

[13] However, number two seeds Scotland proved to be too much as Gary Anderson and Peter Wright won both their singles matches 4–2 to eliminate Hong Kong.

[15] Mackenzie and Lam represented Hong Kong for a third successive time at the PDC World Cup in 2016 where again they played Ireland, a team consisting of William O'Connor and Mick McGowan, and they eventually lost 5–4 in the first round.

[16] MacKenzie has stated he has suffered from dartitis since the middle of 2014 which has greatly affected his form and results, but has managed to keep it at bay to a certain extent.

[18] He is a fan of conspiracy theories associated with David Icke and often uses flights as well as wearing a sponsorship patch with DavidIcke.com written on during tournaments as free advertising.