Ulrika "Ulla" Lovisa Tessin née Sparre (23 May 1711 – 14 December 1768) was a Swedish courtier, letter writer and dilettante artist.
Ulla Tessin was born to riksråd marshal count Erik Sparre of Sundby and Christina (Stina) Beata Lillie.
On 1 February 1732, for example, they directed and acted in the French play Dom Japhlet d'Arménie by Paul Scarron, which was performed by noble amateur actors for the royal court at Bollhuset.
Her spouse left the management of the household economy on her; he also supported her interest to study history and botany, and she collected a substantial library.
"[4] The correspondence between Ulla Tessin and Louisa Ulrika is kept at Riksarkivet, and letters to her husband and family are kept in the archives of Ericsberg Castle, Bergshammar and Börstorp.