The similarities between contemporary externalist theories of knowledge and classical Indian and Tibetan theories of knowledge are striking. Drawing on comparisons with Timothy Williamson's recent work, I address related topics in Indo-Tibetan epistemology and show that correct analysis of these issues requires externalist theories of mind and knowledge. The topics addressed range from a discussion of possible Gettier cases in the Tibetan philosophical tradition to an assessment of arguments for and against the existence of factive mental states/events that fail to be knowledge states/events. I conclude by explaining how these matters in Indian and Tibetan epistemology can inform us about the viability of externalist epistemologies of the sort articulated by Williamson.