Lady Katharina Brandis née Hasse (June 18, 1841 – November 14, 1928) was a German artist.
Katharina was born in Greifswald, the daughter of theology professor at the University of Bonn, Friedrich Rudolf Hasse and his wife Cäcilie née Poelchau.
In 1866 she met the widowed Dietrich Brandis who was in Europe on vacation and married him the next year in Bonn.
The family moved to Richmond in 1872 where another daughter Caroline was born in 1873 and in the same year Cecilia died from scarlet fever.
After retirement and knighthood in 1883 her husband moved back and the couple lived in Bonn spending some time also at Kew Gardens.