The Guardian Books Podcast
BBC Radio 4 Books and Authors
BBC Radio 3 Arts and Ideas
BBC Radio 4 Bookclub
NPR Books
New York Times Book Review
The New York Review of Books
BBC World Service World Book Club
The Penguin Podcast
NPR Nebraska All ABout Books
NPR Nebraska New Books in History
The Guardian The Digested Read podcast
These are the ones i listen more often. There are more if you want... but some either are not updated often, or stopped being updated at all.
If you want podcasts in portuguese i can also give you another list but i guess you are not interested
