2021 Upper Austria Ladies Linz
The 2021 Upper Austria Ladies Linz was a women's tennis tournament played on indoor hard courts. It was the 31st edition of the Linz Open, and was part of the WTA 250 series of the 2021 WTA Tour. It was held at the TipsArena Linz in Linz, Austria, from 6 November until 12 November 2021. Eighth-seeded Alison Riske won the singles title.
Finals
Singles
- Alison Riske defeated Jaqueline Cristian, 2–6, 6–2, 7–5.
Doubles
- Natela Dzalamidze / Kamilla Rakhimova defeated Wang Xinyu / Zheng Saisai 6–4, 6–2
Points and prize money
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 321 | Q2 | Q1 |
| Singles | $43,000 | $21,400 | $11,500 | $6,175 | $3,400 | $2,100 | $1,020 | $600 |
| Doubles * | $12,300 | $6,400 | $3,435 | $1,820 | $960 |
1 Qualifiers prize money is also the Round of 32 prize money
* per team
Singles entrants
Seeds
- Rankings as of November 1, 2021
Other entrants
The following players received wildcards into the singles main draw:The following player received entry using a protected ranking:
The following players received entry from the qualifying draw:
The following player received entry as lucky loser:
Withdrawals
;Before the tournament- Irina-Camelia Begu → replaced by Aliaksandra Sasnovich
- Sorana Cîrstea → replaced by Jaqueline Cristian
- Caroline Garcia → replaced by Zheng Saisai
- Viktorija Golubic → replaced by Mona Barthel
- Kaia Kanepi → replaced by Greet Minnen
- Marta Kostyuk → replaced by Fiona Ferro
- Ann Li → replaced by Clara Burel
- Petra Martić → replaced by Kamilla Rakhimova
- Camila Osorio → replaced by Rebecca Peterson
- Ajla Tomljanović → replaced by Océane Dodin
- Zhang Shuai → replaced by Dayana Yastremska
Doubles entrants
Seeds
- 1 Rankings as of November 1, 2021
Other entrants
The following pair received a wildcard into the doubles main draw:The following pairs received entry using protected rankings: