It is hard to make categorical statements about Thelema, because there are always Thelemites who would disagree.  That said, the core Thelemic writings explicitly mention numerous pagan deities, and include prayers and dedications to them.  There is also some suggestion that they are to be taken symbolically.
In practical fact, the various writings around Thelema, were highly influential in several dimensions to the rise of modern pagan traditions, both after the Second World War and in the 1960s.  Of the major movements coming out of the late 19th and early 20th century which had a pagan flavor, Thelema resembles the practices of modern paganism more than most.
Ultimately how to identify in relation to paganism, Wicca, etc., is up to the individual, but for most practical purposes Thelema can be considered, at least in the "big tent" sense, a pagan practice.
More to the point, many practicing Thelemites are pagan and maintain pagan, or Wiccan practice.