This book provides a rigorous course in microecomics at the intermediate level. The book contains an axiomatic approach to the theory with calculus applications (at the one variable level) and a substantial number of homework problems interspersed throughout the text. One can choose to do the course without calculus if desired. There is a separate set of problems in a workbook format. The volume is more axiomatic than most yet does t require a background in topology or analysis and covers the essential topics of microecomics. It is highly suitable for a one-term class in microecomics at the intermediate level.