2021 Zavarovalnica Sava Portorož – Doubles
# 2021 Zavarovalnica Sava Portorož – Doubles

Maria Kondratieva and Vladimíra Uhlířová were the champions from the previous edition in 2010, but both players retired from professional tennis in 2016.

Anna Kalinskaya and Tereza Mihalíková won the title, defeating Aleksandra Krunić and Lesley Pattinama Kerkhove in the final, 4–6, 6–2, [12–10].

## Seeds

* Andreja Klepač / Tamara Zidanšek (semifinals)
* Aleksandra Krunić / Lesley Pattinama Kerkhove (final)
* Anna Danilina / Fanny Stollár (quarterfinals)
* Katarzyna Piter / Heather Watson (first round)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Draw

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | A Klepač T Zidanšek | 4 | 6 | [10] | | | | | | | | | | | | | |
| | N Dzalamidze K Juvan | 6 | 2 | [8] | 1 | A Klepač T Zidanšek | 7 | 6 | | | | | | | | | |
| | E Cascino C Rosatello | $6^2$ | 2 | | | S Bandecchi L Stefanini | 5 | 4 | | | | | | | | | |
| | S Bandecchi L Stefanini | $7^7$ | 6 | | | | | | 1 | A Klepač T Zidanšek | 4 | $6^7$ | | | | | |
| 4 | K Piter H Watson | 5 | 3 | | | | | | | A Kalinskaya T Mihalíková | 6 | $7^9$ | | | | | |
| | E Bektas T Moore | 7 | 6 | | | E Bektas T Moore | 4 | 3 | | | | | | | | | |
| WC | Ž Falkner P Lovrič | 1 | 2 | | | A Kalinskaya T Mihalíková | 6 | 6 | | | | | | | | | |
| | A Kalinskaya T Mihalíková | 6 | 6 | | | | | | | | | | | A Kalinskaya T Mihalíková | 4 | 6 | [12] |
| | D Kovinić R Voráčová | 6 | 5 | [10] | | | | | | | | | 2 | A Krunić L Pattinama Kerkhove | 6 | 2 | [10] |
| | A Fomina-Klotz E Yashina | 3 | 7 | [8] | | D Kovinić R Voráčová | 6 | $7^7$ | | | | | | | | | |
| WC | T Cvetkovič EN Milić | 1 | 0 | | 3 | A Danilina F Stollár | 4 | $6^3$ | | | | | | | | | |
| 3 | A Danilina F Stollár | 6 | 6 | | | | | | | D Kovinić R Voráčová | 4 | 3 | | | | | |
| | L Bronzetti N Radišić | 6 | 6 | | | | | | 2 | A Krunić L Pattinama Kerkhove | 6 | 6 | | | | | |
| | R Bhosale E Webley-Smith | 4 | 4 | | | L Bronzetti N Radišić | 4 | 4 | | | | | | | | | |
| | S Murray Sharan C Perrin | 1 | 1 | | 2 | A Krunić L Pattinama Kerkhove | 6 | 6 | | | | | | | | | |
| 2 | A Krunić L Pattinama Kerkhove | 6 | 6 | | | | | | | | | | | | | | |
