Felsenstein
# Felsenstein

Felsenstein may refer to:

* Johannes Felsenstein (1944–2017), opera director
* Joseph Felsenstein (born 1942), phylogeneticist
   * Felsenstein's tree pruning algorithm
* Lee Felsenstein (born 1945), computer engineer
* Walter Felsenstein (1901–1975), theater and opera director
