This is a book about biolubricants. It provides a general overview of these useful products, paying attention to their contribution to green and sustainable chemistry or the circular economy through the implementation of biorefineries. But also, it is a book about General Chemistry, Physics, Engineering, etc., as this specific subject could act as a cornerstone for many multidisciplinary fields. The book’s chapters include several exercises and questions to track reader’s learning and give  general and specific idea of how biolubricants are not just a promising research topic, but also a practical reality. The main ideas covered in this work are the following: history, origin and use of biolubricants, main chemical routes to produce them and their quality assessment.