In his brilliant and highly innovative study entitled Reincarnation in Philo of Alexandria (Atlanta 2015), the Finnish scholar Dr Sami Yli-Karjanmaa argues that Philo accepted the doctrine of reincarnation as developed in Pythagoreanism and Platonism, in which the human soul descends from heaven into human bodies and does so repeatedly until such time as it may be delivered from its association with the body and reside in everlasting bliss with God. In the course of his study he is quite critical of scholars who have concluded that the doctrine does not play an important role in Philo’s thought. In my paper I shall examine the question anew and attempt to determine whether Yli-Karjanmaa’s thesis should be accepted by Philonic scholars.