<!-- "none" is preferred when the title is sufficiently descriptive; see WP:SDNONE -->
The year 1601 CE in science and technology included many events, some of which are listed below.
<!-- formerly (18apr07):
See also: 1600 in science, other events of 1601, 1602 in science, and the list of years in science.
-->
Computer science
- January 1 – Retrospectively the epoch reference date from which ANSI dates are counted in COBOL and other computer languages, and the base of Windows FILETIME timestamps which are stored as a 63 bit counter, whose last valid timestamp is on 14 September, AD 30828 at 02:48:05.4775807 UTC.
Exploration
- August 26 – Olivier van Noort completes his circumnavigation of the world.
Mathematics
- Johannes Kepler is appointed imperial mathematician to the Habsburg Empire.
Physiology and medicine
- Giulio Cesare Casseri publishes a treatise on the anatomy of the vocal and auditory organs in Ferrara.
Births
- possible date – Edward Somerset, 2nd Marquess of Worcester, English inventor (d. 1667)
Deaths
- October 24 – Tycho Brahe, Danish astronomer (b. 1546)
