Key: Win : Draw : Loss
| Date | Home | Away | Ref | ||
|---|---|---|---|---|---|
| 04/08/2018 | Swindon | 3 | 2 | Macclesfield | R Lewis |
| 11/08/2018 | Lincoln | 4 | 1 | Swindon | M Salisbury |
| 18/08/2018 | Swindon | 3 | 2 | Tranmere | A Young |
| 21/08/2018 | Crawley Town | 2 | 2 | Swindon | C Breakspear |
| 25/08/2018 | Forest Green | 1 | 1 | Swindon | A Davies |
| 01/09/2018 | Swindon | 1 | 1 | Milton Keynes Dons | T Kettle |
| 08/09/2018 | Morecambe | 0 | 1 | Swindon | P Marsden |
| 15/09/2018 | Swindon | 1 | 2 | Bury | K Johnson |
| 22/09/2018 | Yeovil | 0 | 3 | Swindon | M Donohue |
| 29/09/2018 | Swindon | 0 | 0 | Oldham | C Hicks |
| 02/10/2018 | Crewe | 1 | 0 | Swindon | B Toner |
| 06/10/2018 | Swindon | 1 | 1 | Northampton | N Hair |
| 13/10/2018 | Exeter | 2 | 0 | Swindon | P Wright |
| 20/10/2018 | Swindon | 0 | 0 | Mansfield | A Coggins |
| 23/10/2018 | Swindon | 0 | 2 | Cambridge | M Donohue |
| 27/10/2018 | Notts County | 1 | 2 | Swindon | R Joyce |
| 03/11/2018 | Colchester | 1 | 0 | Swindon | D Whitestone |
| 17/11/2018 | Swindon | 0 | 4 | Carlisle | G Salisbury |
| 24/11/2018 | Port Vale | 0 | 1 | Swindon | P Wright |
| 27/11/2018 | Swindon | 3 | 2 | Stevenage | C Breakspear |
| 08/12/2018 | Swindon | 2 | 1 | Newport County | D Whitestone |
| 15/12/2018 | Grimsby | 2 | 1 | Swindon | S Oldham |
| 22/12/2018 | Swindon | 0 | 0 | Cheltenham | L Collins |
| 26/12/2018 | Northampton | 1 | 1 | Swindon | A Coggins |
| 29/12/2018 | Mansfield | 0 | 0 | Swindon | T Kettle |
| 01/01/2019 | Swindon | 0 | 2 | Exeter | N Kinseley |
| 05/01/2019 | Macclesfield | 1 | 2 | Swindon | S Oldham |
| 12/01/2019 | Swindon | 2 | 2 | Lincoln | B Toner |
| 19/01/2019 | Tranmere | 1 | 2 | Swindon | R Joyce |
| 26/01/2019 | Swindon | 0 | 1 | Crawley Town | L Swabey |
| 09/02/2019 | Milton Keynes Dons | 2 | 3 | Swindon | C Sarginson |
| 12/02/2019 | Swindon | 2 | 0 | Forest Green | D Coote |
| 23/02/2019 | Swindon | 1 | 1 | Grimsby | N Hair |
| 02/03/2019 | Swindon | 3 | 0 | Colchester | O Yates |
| 09/03/2019 | Carlisle | 2 | 1 | Swindon | B Toner |
| 12/03/2019 | Stevenage | 2 | 0 | Swindon | C Hicks |
| 16/03/2019 | Swindon | 0 | 0 | Port Vale | D Drysdale |
| 23/03/2019 | Swindon | 4 | 0 | Morecambe | N Kinseley |
| 30/03/2019 | Bury | 1 | 3 | Swindon | S Oldham |
| 06/04/2019 | Swindon | 1 | 1 | Yeovil | T Bramall |
| 09/04/2019 | Newport County | 0 | 0 | Swindon | K Johnson |
| 13/04/2019 | Oldham | 2 | 2 | Swindon | M Coy |
| 19/04/2019 | Cambridge | 0 | 0 | Swindon | B Huxtable |
| 22/04/2019 | Swindon | 1 | 2 | Crewe | L Collins |
| 27/04/2019 | Cheltenham | 3 | 2 | Swindon | T Nield |
| 04/05/2019 | Swindon | 3 | 1 | Notts County | S Martin |