| Player | Reason | From | Until | Days | Games missed |
|---|---|---|---|---|---|
 Unknown player | Muscle Injury | 13 May 2019 | 27 May 2019 | 14 | 1 |
 Unknown player | Torn Muscle Fiber | 5 May 2019 | 5 Jun 2019 | 31 | 2 |
 Unknown player | Knee Problems | 5 May 2019 | 15 May 2019 | 10 | 1 |
 Igor Zubeldia | Muscle Injury | 21 Apr 2019 | 2 May 2019 | 11 | 2 |
 Diego Llorente | Muscle Injury | 21 Apr 2019 | 10 May 2019 | 19 | 3 |
 Unknown player | Back Problems | 19 Apr 2019 | 24 Apr 2019 | 5 | 1 |
 Unknown player | Knee Problems | 1 Apr 2019 | 9 May 2019 | 38 | 7 |
 Ander Guevara | Torn Muscle Fiber | 22 Mar 2019 | 8 May 2019 | 47 | 7 |
 Unknown player | Muscle Injury | 4 Mar 2019 | 28 Mar 2019 | 24 | 2 |
| Diego Llorente | Muscle Injury | 4 Mar 2019 | 2 Apr 2019 | 29 | 3 |
| Unknown player | Ankle Sprain | 17 Feb 2019 | 9 Mar 2019 | 20 | 2 |
 Unknown player | Muscle Injury | 11 Feb 2019 | 11 May 2019 | 89 | 13 |
| Unknown player | Muscular Problems | 29 Jan 2019 | 23 Feb 2019 | 25 | 3 |
 Unknown player | Muscular Problems | 24 Jan 2019 | 1 Feb 2019 | 8 | 1 |
 Unknown player | Appendectomy | 18 Jan 2019 | 15 Feb 2019 | 28 | 4 |
 Unknown player | Muscular Problems | 8 Jan 2019 | 8 Feb 2019 | 31 | 6 |
 Unknown player | Hamstring Injury | 4 Jan 2019 | 12 Jan 2019 | 8 | 2 |
| Unknown player | Hamstring Injury | 27 Dec 2018 | 17 Jan 2019 | 21 | 3 |
 Andoni Gorosabel | Metatarsal Fracture | 16 Dec 2018 | 16 Apr 2019 | 121 | 18 |
| Unknown player | Muscular Problems | 15 Dec 2018 | 21 Dec 2018 | 6 | 1 |
| Unknown player | Muscular Problems | 10 Dec 2018 | 31 Dec 2018 | 21 | 2 |
 Unknown player | Ankle Injury | 8 Dec 2018 | 27 Apr 2019 | 140 | 22 |
| Unknown player | Ankle Injury | 6 Dec 2018 | 20 Dec 2018 | 14 | 2 |
| Unknown player | Muscle Injury | 29 Nov 2018 | 3 Dec 2018 | 4 | 0 |
| Diego Llorente | Hamstring Injury | 27 Nov 2018 | 14 Dec 2018 | 17 | 3 |
| Unknown player | Muscle Injury | 19 Nov 2018 | 3 Dec 2018 | 14 | 1 |
| Unknown player | Doubtful | 4 Nov 2018 | 4 Nov 2018 | 0 | 1 |
| Unknown player | Stroke | 1 Nov 2018 | 1 Jan 2019 | 61 | 9 |
 Mikel Oyarzabal | Muscular Problems | 23 Oct 2018 | 31 Oct 2018 | 8 | 1 |
 Mikel Merino | Groin Injury | 30 Sept 2018 | 22 Nov 2018 | 53 | 6 |
| Unknown player | Ankle Injury | 30 Sept 2018 | 25 Nov 2018 | 56 | 6 |
| Unknown player | Ligament Stretching | 11 Sept 2018 | 28 Sept 2018 | 17 | 3 |
| Unknown player | Torn Muscle Fiber | 1 Sept 2018 | 20 Sept 2018 | 19 | 1 |
 Unknown player | Knee Injury | 1 Sept 2018 | 1 Aug 2019 | 334 | — |
| Unknown player | Muscular Problems | 30 Aug 2018 | 6 Sept 2018 | 7 | 1 |
| Diego Llorente | Ankle Injury | 25 Aug 2018 | 21 Oct 2018 | 57 | 6 |
| Unknown player | Knee Injury | 1 Aug 2018 | 25 Oct 2018 | 85 | 14 |
| Unknown player | Calf Injury | 13 May 2018 | 27 May 2018 | 14 | 1 |
| Unknown player | Tonsillitis | 8 May 2018 | 18 May 2018 | 10 | 1 |
| Igor Zubeldia | Torn Muscle Fiber | 7 May 2018 | 17 May 2018 | 10 | 1 |
| Unknown player | Muscle Strain | 29 Apr 2018 | 17 May 2018 | 18 | 2 |
 Álvaro Odriozola | Muscle Injury | 2 Apr 2018 | 18 Apr 2018 | 16 | 2 |
 Jon Guridi | Muscle Injury | 26 Mar 2018 | 19 Oct 2018 | 207 | 25 |
 Sergio Canales | Hamstring Injury | 21 Mar 2018 | 4 Apr 2018 | 14 | 1 |
| Unknown player | Muscle Injury | 15 Mar 2018 | 18 Apr 2018 | 34 | 4 |
| Unknown player | Muscle Tear | 11 Mar 2018 | 17 Mar 2018 | 6 | 1 |
| Jon Guridi | Muscle Injury | 2 Mar 2018 | 16 Mar 2018 | 14 | 2 |
 Unknown player | Muscular Problems | 23 Feb 2018 | 16 Mar 2018 | 21 | 4 |
 Gerónimo Rulli | Cruciate Ligament Strain | 22 Feb 2018 | 18 Apr 2018 | 55 | 9 |
| Unknown player | Muscular Problems | 16 Feb 2018 | 21 Feb 2018 | 5 | 1 |
| Unknown player | Muscular Problems | 16 Feb 2018 | 21 Feb 2018 | 5 | 1 |
| Unknown player | Muscular Problems | 11 Feb 2018 | 17 Feb 2018 | 6 | 1 |
| Unknown player | Metatarsal Bruise | 5 Feb 2018 | 2 Mar 2018 | 25 | 5 |
| Unknown player | Ankle Injury | 31 Jan 2018 | 7 Feb 2018 | 7 | 1 |
 Unknown player | Muscle Injury | 8 Jan 2018 | 26 Jan 2018 | 18 | 2 |
 Unknown player | Hip Injury | 4 Jan 2018 | 5 Jul 2018 | 182 | 22 |
| Unknown player | Hamstring Injury | 21 Dec 2017 | 11 Jan 2018 | 21 | 1 |
 Unknown player | Knee Problems | 20 Dec 2017 | 20 Jan 2018 | 31 | 3 |
| Unknown player | Torn Muscle Fiber | 8 Dec 2017 | 5 Jan 2018 | 28 | 3 |
| Unknown player | Flu | 28 Nov 2017 | 9 Dec 2017 | 11 | 3 |
| Unknown player | Ankle Injury | 5 Nov 2017 | 2 Feb 2018 | 89 | 14 |
| Diego Llorente | Muscular Problems | 30 Oct 2017 | 16 Nov 2017 | 17 | 2 |
| Unknown player | Hip Injury | 24 Oct 2017 | 3 Nov 2017 | 10 | 2 |
| Unknown player | Combustion | 1 Oct 2017 | 10 Oct 2017 | 9 | 1 |
| Unknown player | Knee Problems | 29 Sept 2017 | 13 Oct 2017 | 14 | 1 |
| Unknown player | Muscle Injury | 11 Sept 2017 | 25 Oct 2017 | 44 | 9 |
| Unknown player | Torn Ligaments | 7 Sept 2017 | 11 Sept 2017 | 4 | 0 |
| Mikel Oyarzabal | Muscular Problems | 6 Sept 2017 | 23 Sept 2017 | 17 | 4 |
| Unknown player | Knee Injury | 26 Aug 2017 | 26 Sept 2017 | 31 | 6 |
| Unknown player | Muscular Problems | 18 Aug 2017 | 4 Sept 2017 | 17 | 3 |
| Unknown player | Knee Problems | 13 Aug 2017 | 13 Sept 2017 | 31 | 4 |
| Unknown player | Torn Muscle Fiber | 8 Aug 2017 | 8 Sept 2017 | 31 | 5 |
| Igor Zubeldia | Muscle Injury | 2 Aug 2017 | 2 Sept 2017 | 31 | 6 |
 Unknown player | Muscle Injury | 14 Jul 2017 | 14 Sept 2017 | 62 | 14 |
| Unknown player | Knock | 1 May 2017 | 31 Jul 2017 | 91 | 9 |
| Unknown player | Hamstring Injury | 27 Apr 2017 | 11 May 2017 | 14 | 2 |
| Unknown player | Muscular Problems | 27 Apr 2017 | 4 May 2017 | 7 | 1 |
 Unknown player | Stomach Flu | 18 Apr 2017 | 28 Apr 2017 | 10 | 2 |
| Álvaro Odriozola | Torn Muscle Fiber | 5 Apr 2017 | 19 Apr 2017 | 14 | 2 |
| Jon Guridi | Knee Injury | 31 Mar 2017 | 1 Nov 2017 | 215 | 19 |
| Unknown player | Hamstring Injury | 27 Mar 2017 | 10 Apr 2017 | 14 | 2 |
| Unknown player | Muscular Problems | 16 Mar 2017 | 30 Mar 2017 | 14 | 1 |
| Unknown player | Muscle Injury | 11 Feb 2017 | 30 Mar 2017 | 47 | 6 |
| Sergio Canales | Foot Injury | 9 Feb 2017 | 16 Feb 2017 | 7 | 1 |
| Unknown player | Ankle Injury | 23 Jan 2017 | 28 Jan 2017 | 5 | 1 |
| Unknown player | Hamstring Injury | 12 Jan 2017 | 22 Jan 2017 | 10 | 2 |
 Unknown player | Knee Problems | 8 Jan 2017 | 18 Jan 2017 | 10 | 2 |
| Unknown player | Hamstring Injury | 8 Jan 2017 | 3 Feb 2017 | 26 | 6 |
| Unknown player | Hamstring Injury | 8 Jan 2017 | 3 Feb 2017 | 26 | 6 |
| Unknown player | Muscular Problems | 18 Dec 2016 | 3 Jan 2017 | 16 | 1 |
| Unknown player | Hamstring Injury | 18 Dec 2016 | 15 Jan 2017 | 28 | 4 |
| Unknown player | Ankle Injury | 11 Dec 2016 | 19 Dec 2016 | 8 | 1 |
| Mikel Oyarzabal | Shoulder Injury | 28 Nov 2016 | 2 Dec 2016 | 4 | 0 |
| Unknown player | Torn Muscle Fiber | 14 Nov 2016 | 15 Dec 2016 | 31 | 5 |
 Unknown player | Muscle Injury | 1 Nov 2016 | 19 Dec 2016 | 48 | 7 |
| Unknown player | Foot Injury | 4 Oct 2016 | 30 Nov 2016 | 57 | 7 |
| Unknown player | Achilles Tendon Irritation | 13 Sept 2016 | 21 Sept 2016 | 8 | 1 |
| Unknown player | Groin Injury | 5 Sept 2016 | 15 Sept 2016 | 10 | 1 |
 Unknown player | Shoulder Injury | 3 Sept 2016 | 16 Oct 2016 | 43 | 6 |
| Unknown player | Knock | 29 Apr 2016 | 29 May 2016 | 30 | 5 |
