Kirstine Bjerrum Meyer (12 October 1861 – 28 September 1941) was a Danish physicist and was the first woman from her country to earn a doctorate in natural sciences.
She moved to Copenhagen at the age of 18, where she lived with her elder brother, ophthalmologist Jannik Petersen Bjerrum (1851–1920).
She won the Gold Medal of the Royal Danish Academy of Science and Letters in 1899, for a paper examining whether there exists a general equation of state for all fluid bodies, Om overensstemmende Tilstande hos Stofferne.
She received her Ph.D. in physics from the University of Copenhagen in 1909, becoming the first Danish woman to earn a doctorate in natural sciences.
On 9 December 1986, DSB (the Danish railway company) named the newly delivered electric locomotive, Litra EA 3007, Kirstine Meyer.