Susanne Sophie Catharina Gustava Kielland (née Blom, 6 March 1800 – 28 February 1889) was a Norwegian author and missionary pioneer.

She was born in Kongsberg as a daughter of customs officer Gustavus Blom and his wife Karen Petronelle Stoltenberg.

[2] She spent most of her life in the parishes of Finnøy and Lyngdal, where her husband was stationed as vicar.

Following a missionary lecture in Stavanger, she regretted her "lukewarm" attitude to mission.

She died in February 1889 in Skien, at the time living with one of her daughters and her son-in-law Andreas Hauge.