The 2021 Gibraltar Darts Trophy was the second PDC European Tour event on the 2021 PDC Pro Tour. The tournament took place at Europa Sports Park, Gibraltar from 24–26 September 2021. It featured a field of 48 players and £140,000 in prize money, with £25,000 going to the winner.

Krzysztof Ratajski was the defending champion after defeating Dave Chisnall 8–2 in the 2019 final, with the 2020 edition being cancelled due to the COVID-19 pandemic. He lost in the quarter-finals to Mensur Suljović.

Gerwyn Price won his fifth European Tour title, the second in a row after his Hungarian Darts Trophy win, defeating Suljović 8–0 in the final.^[1]

The prize money was unchanged from the 2019 & 2020 European Tours:^[2]

• Seeded players who lose in the second round do not receive this prize money on any Orders of Merit.

The top 16 entrants from the PDC ProTour Order of Merit on 28 June automatically qualified for the event and were seeded in the second round.^[3]

The remaining 32 places went to players from six qualifying events – 24 from the Tour Card Holder Qualifier (held on 9 July), one from the UK Associate Member Qualifier (held on 9 August), one from the European Associate Member Qualifier (held on 5 July), four from the Host Nation Qualifier (as there were no Gibraltarian Tour Card holders) (held on 23 September), one from the Nordic & Baltic Associate Member Qualifier (held in early 2020, and carried over^[4]), and one from the East European Associate Member Qualifier (held in early 2020, and carried over).

The following players took part in the tournament:

	First round (best of 11 legs) 24 September					Second round (best of 11 legs) 25 September					Third round (best of 11 legs) 26 September					Quarter-finals (best of 11 legs) 26 September					Semi-finals (best of 13 legs) 26 September					Final (best of 15 legs) 26 September
						1	Joe Cullen 88.36	6
	Martijn Kleermaker 93.66		5				Joe Murnan 79.09	1
											1	Cullen 104.42	4
	Joe Murnan 84.62		6
											16	Aspinall 107.46	6
						16	Nathan Aspinall 102.55	6
	Ritchie Edhouse 91.36		6				Ritchie Edhouse 89.86	3
																16	Aspinall 98.97	6
	Steve Beaton 83.93		4
																8	Wade 91.37	2
						8	James Wade 95.89	6
	John Henderson 90.72		2				Boris Krčmar 93.60	5
											8	Wade 99.96	6
	Boris Krčmar 97.78		6
												Clemens 87.44	3
						9	Devon Petersen 86.45	3
	Luke Humphries 94.63		4				Gabriel Clemens 88.83	6
																					16	Aspinall 101.04	3
	Gabriel Clemens 92.92		6
																					5	Price 100.83	7
						4	Michael van Gerwen 100.17	6
	Patrik Kovács 85.08		4				Rob Cross 92.70	3
											4	van Gerwen 102.82	6
	Rob Cross 90.85		6
											13	Noppert 102.52	5
						13	Danny Noppert 94.76	6
	Andreas Harrysson 85.66		6				Andreas Harrysson 85.39	2
																4	van Gerwen 105.02	5
	Keane Barry 89.21		3
																5	Price 103.61	6
						5	Gerwyn Price 97.14	6
	Stephen Bunting 86.80		5				Florian Hempel 84.93	1
											5	Price 102.02	6
	Florian Hempel 94.46		6
											12	Heta 96.94	3
						12	Damon Heta 92.39	6
	Adam Hunt 89.29		6				Adam Hunt 84.13	3
																										5	Price 105.47	8
	Geert Nentjes 85.85		0
																										15	Suljović 88.47	0
						2	José de Sousa 92.02	6
	Dyson Parody 72.48		4				Kenny Neyens 75.18	0
											2	de Sousa 89.39	1
	Kenny Neyens 71.21		6
											15	Suljović 101.03	6
						15	Mensur Suljović 88.24	6
	Boris Koltsov 92.23		2				Kim Huybrechts 92.91	5
																15	Suljović 86.51	6
	Kim Huybrechts 105.08		6
																10	Ratajski 87.73	2
						7	Jonny Clayton 94.89	4
	Justin Broton 79.13		1				Adam Smith-Neale 86.65	6
												Smith-Neale 91.18	2
	Adam Smith-Neale 93.88		6
											10	Ratajski 88.85	6
						10	Krzysztof Ratajski 90.17	6
	Ryan Searle 96.34		6				Ryan Searle 90.00	3
																					15	Suljović 98.07	7
	Martin Schindler 95.45		5
																						Whitlock 85.92	5
						3	Peter Wright 108.19	3
	Callan Rydz 103.77		6				Callan Rydz 110.72	6
												Rydz 92.97	1
	Justin Hewitt 87.55		1
											14	Dolan 97.78	6
						14	Brendan Dolan 92.50	6
	Mervyn King 94.93		6				Mervyn King 89.54	1
																14	Dolan 84.20	4
	Craig Galliano 79.50		0
																	Whitlock 83.40	6
						6	Michael Smith 92.04	2
	Wayne Jones 89.09		1				Simon Whitlock 91.81	6
											Whitlock 94.75		6
	Simon Whitlock 96.66		6
											Evetts 85.78		4
						11	Dirk van Duijvenbode 91.99	5
	Ryan Murray 85.13		5				Ted Evetts 91.07	6
	Ted Evetts 82.53		6