Elisabeth (Elly) Dekker (Haarlem, 1943) is a Dutch astronomer and science historian, specialising in the history of astronomy. She studied theoretical physics and astronomy at Utrecht University. In 1975 she obtained a PhD in astronomy at Leiden University with the thesis Spiral structure and the dynamics of flat stellar systems supervised by Hendrik C. van de Hulst. From 1978-1988 she was a curator of Museum Boerhaave in Leiden and afterwards an independent scholar. From 1993-1995 she was a Sackler fellow of the Royal Museums Greenwich. In 1998 she was awarded the Caird Medal for her work on the globe collection of the National Maritime Museum in Greenwich.

Publications

Dekker is the author of articles and books including:

Articles

Books

Personal life

Dekker was married to the astronomer and physicist Hendrik Gerard (Henk) van Bueren (1925–2012).