|Born||18 March 1995|
Devonport, Tasmania, Australia
|Home town||Melbourne, Victoria,|
|Playing darts since||2011|
|Darts||24 Gram Target Signature|
|Walk-on music||"The Nights" by Avicii|
|Organisation (see split in darts)|
|PDC premier events – best performances|
|World Ch'ship||Last 64: 2017|
|Grand Slam||Group Stage: 2017|
|UK Open||Runner Up: 2018|
|Other tournament wins|
A native of Tasmania, Cadby began competing in Darts Players Australia (DPA) events in 2016 after relocating to Melbourne. He won seven events during his debut season on the DPA Australian Grand Prix circuit, and finished first in the rankings, thus securing qualification for the 2017 PDC World Championship.
In August 2016, Cadby lost 6–3 to 16-time world champion Phil Taylor in the first round of the Sydney Masters on his televised debut. He played Taylor again a week later in the first round of the Perth Masters, winning 6–2 with an average of 103.58. He went on to lose 10–2 to Peter Wright in the quarter-finals, with both players averaging 109. In October, Cadby qualified for the final of the PDC World Youth Championship, defeating Dimitri Van den Bergh in the semi-finals. The final was played in Minehead, England in November, as part of the last night of the Players Championship Finals and Cadby beat Berry van Peer 6–2 to secure the title.
Cadby won 2–0 in the preliminary round of the 2017 World Championship against China's Sun Qiang with an average of 102.48, a record for the prelims, to set up a first round tie with 28th seed Joe Cullen. In a high quality contest, Cadby took the opening set, but went on to lose 3–1. He took out six ton-plus finishes in the two matches he played.
In 2018 Corey competed at PDC Q School. On the first day of play, Cadby defeated Callan Rydz 5-2 in the final four to secure his PDC Tour Card. On 10 February 2018, Cadby won his first PDC title since winning his tour card the previous month in the 5th UK Open qualifier, defeating reigning World Champion Rob Cross in the final with an average of 108.77. Corey’s sporting hero is Chris Bradley 
After problems getting to the UK to play the ProTour, Cadby resigned his Tour Card at the start of 2020 despite being in the top 64.
World Championship record
- 2017: First round (lost to Joe Cullen 1–3)
PDC career finals
PDC major finals: 1 (1 runner-up)
|UK Open (0–1)|
|Outcome||No.||Year||Championship||Opponent in the final||Score[N 1]|
|Runner-up||1.||2018||UK Open||Gary Anderson||7–11 (l)|
PDC world series finals: 1 (1 runner-up)
|Outcome||No.||Year||Championship||Opponent in the final||Score|
|Runner-up||1.||2017||Auckland Darts Masters||Kyle Anderson||10–11 (l)|
- (l) = score in legs, (s) = score in sets.
- "Cadby Aiming To Show Star Quality". PDC. 4 August 2016. Archived from the original on 6 August 2016. Retrieved 4 August 2016.
- "Cadby Seals World Championship Spot". PDC. 5 November 2016. Archived from the original on 22 April 2017. Retrieved 5 November 2016.
- "Ladbrokes Sydney Darts Masters Day One". PDC. Archived from the original on 20 December 2016. Retrieved 18 December 2016.
- "Phil Taylor suffers first round defeat at Perth Masters". Sky Sports. 25 August 2016. Retrieved 25 August 2016.
- "Peter Wright defeats Corey Cadby to book Michael van Gerwen semi-final in Perth". Sky Sports. 26 August 2016. Retrieved 26 August 2016.
- "Cadby & van Peer Reach Youth Final". PDC. 18 October 2016. Archived from the original on 18 October 2016. Retrieved 18 October 2016.
- "World Youth Glory For Cadby". PDC. 27 November 2016. Archived from the original on 28 November 2016. Retrieved 27 November 2016.
- "William Hill World Championship Day Five". PDC. Archived from the original on 20 December 2016. Retrieved 20 December 2016.
- "PDC Qualifying Schools Day One | PDC". www.pdc.tv. Retrieved 19 January 2018.
- "Cadby Wins Maiden Title | PDC". www.pdc.tv. Retrieved 11 February 2018.
- Player profile on Corey Cadby from Dartsdatabase