Anders Lindstedt (27 June 1854 – 16 May 1939) was a Swedish mathematician, astronomer, and actuarial scientist, known for the Lindstedt-Poincaré method.

Lindstedt was born in a small village in the district of Sundborns, Dalecarlia a province in central Sweden.

He combined practical astronomy with an interest in theory,[1] developing especially an interest in the three-body problem[3] This work was to influence Poincaré[4] whose work on the three-body problem led to the discovery that there can be orbits which are nonperiodic, and yet not forever increasing nor approaching a fixed point, the beginning of what we now know as 'chaos theory'.

Lindstedt returned to Sweden in 1886 to take a post as professor at the Royal Institute of Technology in Stockholm, where he was rector from 1903 to 1909.

In 1912 Lindstedt constructed a life table for annuities[9] using data from Swedish population experience and for each age was able to extrapolate the sequence of annual probability of death, namely the mortality profile.