| WTA Rabat | 04/30 12:00 | 25 | [111] Timea Bacsinszky v Johanna Larsson [92] | 6-3,6-1 | |
| WTA Istanbul | 04/22 13:40 | 25 | [92] Johanna Larsson v Margarita Gasparyan [72] | 6-7,6-4,3-6 | |
| WTA Charleston | 04/01 15:45 | 24 | [31] Jelena Ostapenko v Johanna Larsson [88] | 6-1,6-4 | |
| WTA Miami | 03/21 17:10 | 23 | [96] Taylor Townsend v Johanna Larsson [79] | 6-1,6-2 | |
| WTA Indian Wells | 03/07 22:40 | 23 | [76] Johanna Larsson v Kaia Kanepi [86] | 2-6,2-6 | |
| WTA Budapest | 02/19 10:00 | 25 | [126] Kateryna Kozlova v Johanna Larsson [69] | 6-1,6-1 | |
| Fed Cup 2019 | 02/09 16:00 | 29 | [109] Natalia Vikhlyantseva v Johanna Larsson [71] | 7-6,6-2 | |
| Fed Cup 2019 | 02/08 10:25 | - | [158] Viktoriya Tomova v Johanna Larsson [71] | 4-6,4-6 | |
| Fed Cup 2019 | 02/07 09:00 | - | Elena Malygina v Johanna Larsson | 2-6,3-6 | |
| Fed Cup 2019 | 02/06 09:00 | 1 | [34] Dayana Yastremska v Johanna Larsson [71] | 6-4,6-2 | |
| Australian Open femminili | 01/16 05:30 | 24 | [77] Johanna Larsson v Caroline Wozniacki [3] | 1-6,3-6 | |
| Australian Open femminili | 01/14 06:00 | 23 | [62] Vera Lapko v Johanna Larsson [77] | Retired | |
| WTA Hobart | 01/08 05:30 | 25 | [75] Johanna Larsson v Zoe Hives [211] | 6-7,6-7 | |
| WTA Auckland | 01/01 04:40 | 25 | [75] Johanna Larsson v Julia Goerges [14] | 0-6,4-6 | |
| WTA Lussemburgo | 10/16 15:25 | 25 | [71] Johanna Larsson v Katerina Siniakova [33] | 1-6,7-6,0-6 | |
| WTA Linz | 10/11 12:00 | 26 | [119] Ekaterina Alexandrova v Johanna Larsson [66] | 3-6,6-1,6-1 | |
| WTA Linz | 10/09 09:00 | 25 | [66] Johanna Larsson v Stefanie Voegele [75] | 6-2,4-6,6-4 | |
| WTA Seoul | 09/18 07:25 | 25 | [68] Johanna Larsson v Ekaterina Alexandrova [122] | 1-6,2-6 | |
| WTA Hiroshima | 09/11 02:30 | 25 | [68] Magda Linette v Johanna Larsson [70] | 6-4,6-1 | |
| WTA Chicago | 09/06 19:05 | 26 | [82] Johanna Larsson v Francoise Abanda [211] | 6-2,3-6,3-6 | |
| WTA Chicago | 09/04 20:40 | 25 | [82] Johanna Larsson v Beatriz Haddad Maia [130] | 6-4,1-6,7-6 | |
| US Open femminili | 08/30 16:00 | 24 | [82] Johanna Larsson v Angelique Kerber [4] | 2-6,7-5,4-6 | |
| US Open femminili | 08/28 15:00 | 23 | [31] Alize Cornet v Johanna Larsson [82] | 6-4,3-6,2-6 | |
| WTA New Haven - Qual. | 08/17 15:15 | 44 | [36] Aliaksandra Sasnovich v Johanna Larsson [83] | 7-6,6-3 | |
| WTA Cincinnati Qual | 08/11 14:00 | 44 | [50] Yulia Putintseva v Johanna Larsson [85] | 7-5,3-6,6-0 | |
| WTA Mosca | 07/23 10:25 | 25 | [77] Johanna Larsson v Aliaksandra Sasnovich [41] | 1-6,3-6 | |
| WTA Gstaad | 07/19 09:00 | 26 | [226] Mandy Minella v Johanna Larsson [77] | 6-3,6-4 | |
| WTA Gstaad | 07/18 13:55 | 25 | [413] Leonie Kung v Johanna Larsson [77] | 4-6,1-6 | |
| Wimbledon Femminile | 07/02 12:35 | 23 | [58] Johanna Larsson v Venus Williams [9] | 7-6,2-6,1-6 | |
| ITF Femminile Southsea | 06/26 14:20 | 26 | [35] Renata Voracova v Johanna Larsson [62] | 7-6,2-6,6-2 |