| Car Name: | Ligier JS23 Ligier JS23B |
| Category: | Formula One |
| Constructor: | Ligier |
| Team: | Ligier Loto |
| Designer: | Michel Beaujon (Technical Director) Claude Galopin (Chief Designer) Henri Durand (Head of Aerodynamics) |
| Predecessor: | JS21 |
| Successor: | JS25 |
| Drivers: | 25.  François Hesnault26.  Andrea de Cesaris |
| Technical Ref: | [1] |
| Chassis: | Carbon fibre Monocoque |
| Front Suspension: | Double wishbones, pushrods |
| Rear Suspension: | Double wishbones, pushrods |
| Wheelbase: | 2810NaN |
| Track: | Front: 1800NaN Rear: 1652NaN |
| Engine Name: | Renault Gordini EF4, |
| Configuration: | 90° V6, |
| Capacity: | 14921NaN1, |
| Turbo/Na: | turbo, |
| Engine Position: | mid-engine, longitudinally mounted |
| Gearbox Name: | Ligier / Hewland |
| Gears: | 5-speed |
| Type: | manual |
| Tyres: | Michelin |
| Weight: | 540NaN |
| Fuel: | Elf |
| Debut: | 1984 Brazilian Grand Prix |
| Last Event: | 1984 Portuguese Grand Prix |
| Races: | 16 |
| Cons Champ: | 0 |
| Drivers Champ: | 0 |
| Wins: | 0 |
| Poles: | 0 |
| Fastest Laps: | 0 |
The Ligier JS23 was a Formula One car designed by Michel Beaujon and Claude Galopin for the Ligier team for use in the 1984 Formula One season. The car was powered by a turbocharged Renault V6 engine and ran on Michelin tyres. Drivers of the car during 1984 were François Hesnault and Andrea de Cesaris.
1984 wasn't a successful year for Ligier with de Cesaris scoring all three points Ligier earned meaning the French team finished 9th in the Constructors Championship. De Cesaris actually scored the three points with a 5th place at the 2nd race of the season in South Africa and a 6th place two races later in San Marino.
The JS23 was replaced for the season by the Ligier JS25.
(key)
| Year | Team | Chassis | Engine | Tyres | Drivers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Pts. | WCC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Équipe Ligier Loto | Renault EF4 V6tc | BRA | RSA | BEL | SMR | FRA | MON | CAN | DET | DAL | GBR | GER | AUT | NED | ITA | EUR | POR | 3 | 9th | ||||
| JS23 | François Hesnault | Ret | 10 | Ret | Ret | DNS | Ret | Ret | Ret | Ret | Ret | 8 | 8 | 7 | Ret | 10 | Ret | ||||||
| JS23 | Andrea de Cesaris | Ret | 5 | Ret | 6 | 10 | Ret | Ret | Ret | Ret | 10 | 7 | Ret | Ret | Ret | ||||||||
| JS23B | 7 | 12 |