The 45-year-old has joined the Spireites from League Two rivals Accrington Stanley.
"I'm delighted to be the new Chesterfield manager," Cook told the club's official website. "It's a fantastic club with a great infrastructure and I'm really looking forward to the challenge."
Cook will take charge of the side for the first time when they host Barnet at the Proact Stadium on Saturday.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Port Vale | 14 | 9 | 3 | 2 | 23 | 15 | 8 | 30 |
| 2 | Walsall | 13 | 8 | 2 | 3 | 26 | 14 | 12 | 26 |
| 3 | Notts County | 14 | 7 | 5 | 2 | 22 | 12 | 10 | 26 |
| 4 | Doncaster RoversDoncaster | 14 | 8 | 2 | 4 | 20 | 16 | 4 | 26 |
| 5 | Crewe AlexandraCrewe | 13 | 7 | 3 | 3 | 16 | 12 | 4 | 24 |
| 6 | Chesterfield | 14 | 5 | 7 | 2 | 28 | 15 | 13 | 22 |
| 7 | Bradford CityBradford | 14 | 6 | 4 | 4 | 20 | 15 | 5 | 22 |
| 8 | MK Dons | 14 | 6 | 3 | 5 | 21 | 16 | 5 | 21 |
| 9 | BarrowBarrow | 14 | 6 | 3 | 5 | 15 | 11 | 4 | 21 |
| 10 | Grimsby Town | 14 | 7 | 0 | 7 | 18 | 25 | -7 | 21 |
| 11 | Gillingham | 14 | 6 | 2 | 6 | 15 | 12 | 3 | 20 |
| 12 | Salford City | 14 | 5 | 5 | 4 | 14 | 16 | -2 | 20 |
| 13 | AFC Wimbledon | 11 | 6 | 1 | 4 | 18 | 9 | 9 | 19 |
| 14 | Newport CountyNewport | 14 | 6 | 1 | 7 | 18 | 24 | -6 | 19 |
| 15 | Fleetwood TownFleetwood | 13 | 4 | 6 | 3 | 19 | 15 | 4 | 18 |
| 16 | Cheltenham TownCheltenham | 14 | 5 | 2 | 7 | 18 | 21 | -3 | 17 |
| 17 | Harrogate TownHarrogate | 14 | 4 | 3 | 7 | 11 | 19 | -8 | 15 |
| 18 | Bromley | 13 | 3 | 5 | 5 | 15 | 17 | -2 | 14 |
| 19 | Tranmere RoversTranmere | 13 | 3 | 5 | 5 | 8 | 16 | -8 | 14 |
| 20 | Accrington StanleyAccrington | 13 | 3 | 4 | 6 | 15 | 22 | -7 | 13 |
| 21 | Colchester UnitedColchester | 13 | 2 | 6 | 5 | 16 | 20 | -4 | 12 |
| 22 | Swindon TownSwindon | 14 | 2 | 6 | 6 | 15 | 20 | -5 | 12 |
| 23 | Carlisle UnitedCarlisle | 14 | 2 | 2 | 10 | 12 | 28 | -16 | 8 |
| 24 | Morecambe | 14 | 1 | 4 | 9 | 12 | 25 | -13 | 7 |
| > League Two Full Table | |||||||||
