Vivica Aina Fanny Bandler (5 February 1917 – 30 July 2004) was a Finnish theatre director and agronomist.

She was the daughter of Helsinki Mayor Erik von Frenckell and theatre historian Ester-Margaret Lindberg.

[5] She served in the Lotta Svärd during World War II and married Austrian Kurt Bandler in 1943; they divorced in 1963.

[1] In 1946, she began a lesbian love affair with the Finnish-Swedish writer Tove Jansson, which is documented by a series of letters they exchanged in subsequent years.

Jansson incorporated the pair of them into her Moomin series as Thingumy and Bob (Swedish: Tofslan och Vifslan, named for Tove and Vivica respectively).