Visiting professor opportunities for PhD candidates In my field, economics, I occasionally see opportunities for ABD PhD Candidates to apply for one- or two-semester visiting professor positions (presumably as sabbatical cover). I have only ever heard of two such opportunities, and each was through an email forwarded by our graduate adviser. Are these positions advertised centrally anywhere?
https://www.aeaweb.org/joe/listings.php

has a big centralized list of econ jobs (at all ranks) in the US. If you're not in the US you could try looking for such information at the website of the large professional organizations in your country.