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| Tournament details | |||
|---|---|---|---|
| Dates | 2–7 March | ||
| Level | Super 300 | ||
| Total prize money | US$140,000 | ||
| Venue | St. Jakobshalle | ||
| Location | Basel, Switzerland | ||
| Champions | |||
| Men's singles |  Viktor Axelsen | ||
| Women's singles |  Carolina Marín | ||
| Men's doubles | Kim Astrup Anders Skaarup Rasmussen | ||
| Women's doubles |  Pearly Tan Thinaah Muralitharan | ||
| Mixed doubles |  Thom Gicquel Delphine Delrue | ||
| |||
The 2021 Swiss Open (officially known as the Yonex Swiss Open 2021, after its sponsor) was a badminton tournament in St. Jakobshalle in Basel, Switzerland, from 2 to 7 March 2021. It had a purse of $140,000.