The 2005 Silverstone GP2 Series round was a GP2 Series motor race held on 9 and 10 July 2005 at Silverstone Circuit, United Kingdom. It was the sixth round of the 2005 GP2 Series season. The race weekend supported the 2005 British Grand Prix.

Nico Rosberg, who was the polesitter for race one, took his first GP2 feature race win, his second consecutive victory after also winning the sprint race at Magny-Cours. The feature race podium was completed by championship leader Heikki Kovalainen, of Arden International, and Rosberg's ART Grand Prix teammate Alexandre Prémat.^[1]

Olivier Pla, who was on reverse grid pole after finishing eighth in the feature race, took his and DPR's first win of the season, ahead of iSport's Scott Speed and Kovalainen.^[2]

Pos.	No.	Driver	Team	Time	Gap	Grid
1	9	Nico Rosberg	ART Grand Prix	1:31.509		1
2	3	Nelson Piquet Jr.	Hitech Piquet Sports	1:31.550	+0.041	2
3	22	Heikki Kovalainen	Arden International	1:31.929	+0.420	3
4	10	Alexandre Prémat	ART Grand Prix	1:31.987	+0.478	141
5	8	Adam Carroll	Super Nova International	1:32.004	+0.495	4
6	18	Neel Jani	Racing Engineering	1:32.190	+0.681	5
7	14	José María López	DAMS	1:32.298	+0.789	6
8	1	Scott Speed	iSport International	1:32.339	+0.830	7
9	7	Giorgio Pantano	Super Nova International	1:32.359	+0.850	8
10	23	Nicolas Lapierre	Arden International	1:32.374	+0.865	9
11	24	Clivio Piccione	Durango	1:32.395	+0.886	10
12	17	Gianmaria Bruni	Coloni Motorsport	1:32.446	+0.937	11
13	11	Olivier Pla	DPR	1:32.467	+0.958	12
14	20	Juan Cruz Álvarez	Campos Racing	1:32.793	+1.284	13
15	5	Ernesto Viso	BCN Competición	1:32.816	+1.307	242
16	19	Borja García	Racing Engineering	1:32.848	+1.339	15
17	6	Hiroki Yoshimoto	BCN Competición	1:32.941	+1.432	16
18	25	Ferdinando Monfardini	Durango	1:32.953	+1.444	17
19	15	Fairuz Fauzy	DAMS	1:33.006	+1.497	18
20	21	Sergio Hernández	Campos Racing	1:33.226	+1.717	19
21	12	Ryan Sharp	DPR	1:33.298	+1.789	20
22	2	Can Artam	iSport International	1:34.033	+2.524	21
23	4	Alexandre Negrão	Hitech Piquet Sports	1:34.109	+2.600	22
24	16	Mathias Lauda	Coloni Motorsport	1:34.692	+3.183	23
107% time: 1:37.914
Source:[3]

Notes

• ^1 – Alexandre Prémat received a ten-place penalty for causing a collision with José María López in the Magny-Cours sprint race.^[3]
• ^2 – Ernesto Viso received a ten-place penalty for causing a collision with Olivier Pla in the Magny-Cours sprint race.

Pos.	No.	Driver	Team	Laps	Time/Retired	Grid	Points
1	9	Nico Rosberg	ART Grand Prix	36	58:26.373	1	12
2	22	Heikki Kovalainen	Arden International	36	+0.500	3	8
3	10	Alexandre Prémat	ART Grand Prix	36	+26.300	14	8
4	1	Scott Speed	iSport International	36	+29.700	7	5
5	18	Neel Jani	Racing Engineering	36	+50.500	5	4
6	24	Clivio Piccione	Durango	36	+51.000	10	3
7	17	Gianmaria Bruni	Coloni Motorsport	36	+56.800	11	2
8	11	Olivier Pla	DPR	36	+58.000	12	1
9	14	José María López	DAMS	36	+58.300	6
10	23	Nicolas Lapierre	Arden International	36	+1:00.900	9
11	20	Juan Cruz Álvarez	Campos Racing	36	+1:01.300	13
12	7	Giorgio Pantano	Super Nova International	36	+1:03.700	8
13	6	Hiroki Yoshimoto	BCN Competición	36	+1:04.300	16
14	25	Ferdinando Monfardini	Durango	36	+1:06.100	17
15	5	Ernesto Viso	BCN Competición	36	+1:18.900	24
16	21	Sergio Hernández	Campos Racing	36	+1:29.500	19
17	19	Borja García	Racing Engineering	36	+1:35.000	15
18	2	Can Artam	iSport International	35	+1 lap	21
19	4	Alexandre Sarnes Negrão	Hitech Piquet Sports	35	+1 lap	22
20	16	Mathias Lauda	Coloni Motorsport	35	+1 lap	23
21	8	Adam Carroll	Super Nova International	34	+2 laps/DNF	4
Ret	15	Fairuz Fauzy	DAMS	30	Did not finish	18
Ret	12	Ryan Sharp	DPR	1	Did not finish	20
DNS	3	Nelson Piquet Jr.	Hitech Piquet Sports	0	Did not start	2
Fastest lap: Alexandre Prémat (ART Grand Prix) — 1:35.326 (on lap 4)
Source:[1]

Pos.	No.	Driver	Team	Laps	Time/Retired	Grid	Points
1	11	Olivier Pla	DPR	24	40:09.933	1	6
2	1	Scott Speed	iSport International	24	+0.500	5	7
3	22	Heikki Kovalainen	Arden International	24	+1.200	7	4
4	9	Nico Rosberg	ART Grand Prix	24	+1.800	8	3
5	10	Alexandre Prémat	ART Grand Prix	24	+5.500	6	2
6	18	Neel Jani	Racing Engineering	24	+6.700	4	1
7	7	Giorgio Pantano	Super Nova International	24	+8.400	12
8	8	Adam Carroll	Super Nova International	24	+11.200	21
9	19	Borja García	Racing Engineering	24	+12.200	17
10	25	Ferdinando Monfardini	Durango	24	+13.700	14
11	17	Gianmaria Bruni	Coloni Motorsport	24	+15.400	2
12	21	Sergio Hernández	Campos Racing	24	+23.500	16
13	5	Ernesto Viso	BCN Competición	24	+29.600	15
14	2	Can Artam	iSport International	24	+37.800	18
15	16	Mathias Lauda	Coloni Motorsport	24	+38.300	20
16	4	Alexandre Negrão	Hitech Piquet Sports	23	+1 lap	19
Ret	24	Clivio Piccione	Durango	19	Did not finish	3
Ret	12	Ryan Sharp	DPR	18	Did not finish	23
Ret	23	Nicolas Lapierre	Arden International	16	Did not finish	10
Ret	3	Nelson Piquet Jr.	Hitech Piquet Sports	8	Did not finish	24
Ret	20	Juan Cruz Álvarez	Campos Racing	5	Did not finish	11
DNS	14	José María López	DAMS	0	Did not start	9
DNS	6	Hiroki Yoshimoto	BCN Competición	0	Did not start	13
DNS	15	Fairuz Fauzy	DAMS	0	Did not start	22
Fastest lap: Scott Speed (iSport International) — 1:35.092 (on lap 2)
Source:[2]

Drivers' Championship standings Pos. Driver Points 1 Heikki Kovalainen 64 2 2 Nico Rosberg 44 2 3 Scott Speed 41 2 4 Adam Carroll 34 2 5 Gianmaria Bruni 33

Teams' Championship standings Pos. Team Points 1 Arden International 76 1 2 ART Grand Prix 68 1 3 Super Nova International 44 1 4 iSport International 43 1 5 Coloni Motorsport 36

• Note: Only the top five positions are included for both sets of standings.