| Type: | GP |
| Grand Prix: | Spanish |
| Date: | 25 July |
| Year: | 1926 |
| Official Name: | II Gran Premio de España |
| Country: | Spain |
| Flag Suffix: | 1785 |
| Location: | San Sebastián, Spain |
| Course: | Circuito Lasarte |
| Course Mi: | 11.76 |
| Course Km: | 17.32 |
| Distance Laps: | 40 |
| Distance Mi: | 430.4 |
| Distance Km: | 692.6 |
| Pole Driver: | Henry Segrave |
| Pole Country: | UK |
| Pole Team: | Sunbeam |
| Grid From Number: | True |
| Fast Driver: | Bartolomeo Costantini |
| Fast Team: | Bugatti |
| Fast Time: | 7:41.6 |
| Fast Country: | Italy |
| Fast Flag Suffix: | 1861 |
| First Driver: | Bartolomeo Costantini |
| First Team: | Bugatti |
| First Country: | Italy |
| First Flag Suffix: | 1861 |
| Second Driver: | Jules Goux |
| Second Team: | Bugatti |
| Second Country: | France |
| Third Driver: | Louis Wagner |
| Third Team: | Delage |
| Third Country: | France |
| Third Driver2: | Robert Benoist |
| Third Country2: | France |
The 1926 Spanish Grand Prix (formally the II Gran Premio de España) was a Grand Prix motor race held at Circuito Lasarte on 25 July 1926. The race was held over 40 laps of a 17.315 km circuit, for a total race distance of 692.6 km. The race was won by Bartolomeo Costantini driving a Bugatti.[1]
The race was held just one week after the 1926 European Grand Prix held on the same circuit. The European Grand Prix was a round of the 1926 AIACR World Championship, so was held to the 1.5 litre formula. The Spanish Grand Prix was held to Formula Libre, and so the Bugatti and Delage factory entries ran their 1925 2-litre cars.
| Pos | No | Driver | Car | Laps | Time/Retired | |
|---|---|---|---|---|---|---|
| 1 | 5 |  Bartolomeo Costantini | Bugatti | 40 | 5h35m47 | |
| 2 | 15 |  Jules Goux | Bugatti | 40 | 5h52m15 | |
| 3 | 24 | Louis Wagner Robert Benoist | Delage | 40 | 5h56m57 | |
| 4 | 23 | Ferdinando Minoia | Bugatti | 40 | 5h57m26 | |
| NC | 30 | Jules Ferry Boris Ivanowski | Bugatti | 33 | 6h03m32 | |
| DNF | 28 | "Williams" | Bugatti | 29 | Valves | |
| DNF | 16 | André Morel | Delage | 6 | Valves | |
| DNF | 3 | Henry Segrave | Sunbeam | 5 | Front Axle | |
| DNF | 6 | Robert Benoist | Delage | 4 | Valves, Ignition | |
| DNF | 29 |  René de Buck | Bugatti | 2 | Steering | |
| Sources: | ||||||