This paper explores two influential theories of self-directed learning: learner autonomy and self-regulated learning, principally as evidenced in the writings of Henri Holec, David Little, Phil Benson, Barry Zimmerman and Paul Pintrich. The paper charts parallels and divergences between these two approaches,identifying any opportunities for mutual enrichment and implicitly raising the question of which is the more convincing. The differences between the two theories appear significant. While learner autonomy assumes that learners are capable of conscious reflection and decision making, there is a greater ambiguity about whether the strategies employed by self-regulated learners are applied consciously or automatically. Moreover, whereas ...