Barbara Jean Mitcalfe née Fougère (25 November 1928 – 7 January 2017) was a New Zealand conservationist, botanist and educator.

[3] Mitcalfe initially taught at Te Aute College in the Hawke's Bay but in the late 1950s she moved with her family to Ahipara.

[3] She specialising in native plant ecology and led or participated in numerous botanical excursions both in the North and South Islands.

[7][8] She advocated for and was involved the restoration work to facilitate establishing a corridor of native forest from Wellington's South Coast to the Tararua Range.

[3] Mitcalfe also volunteered at Otari-Wilton’s Bush leading botanical walks and assisting with their annual native plant sale.

[1] Mitcalfe also owned Nga Rengarenga, a 0.06 ha sized piece of land that is protected by a QEII Open Space Covenant, and which has regenerating native forest upon it.

[1] Mitcalfe appeared before the Environment Court and successfully argued against the clearance of Larsen Crescent Bush for a proposed subdivision.

[1][3] She also successfully advocated for the purchase of land in Stokes Valley by the Hutt City Council which would subsequently be known as Horoeke Scenic Reserve.

[10] She was a prolific writer of journal and newsletter articles, plant lists and reports to and for the Department of Conservation and various Wellington regional and city councils.

[2] A celebration of her life was held at the Tapu Te Ranga Marae surrounded by the native plantings she had helped to establish.