The 2021 Bad Homburg Open was a women's tennis tournament played on outdoor grass courts.

It was the 1st edition of the Bad Homburg Open, and part of the WTA 250 series of the 2021 WTA Tour.

The event took place at the TC Bad Homburg in Bad Homburg, Germany, from 20 until 26 June 2021.

Bad Homburg is historically significant in the development and popularity of tennis in Europe.

[1] The following players received wildcards into the main draw: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: The following pairs received wildcards into the doubles main draw: