This book is compiled according to the program of "Medical and Biological Physics" for medical specialties of universities. It is based upon a course of lectures on physics in medicine and biology given by me at Yerevan HayBusak University. It consists of introduction to mathematics, of basic of physics and some of important applications in medicine and biology. The course of physics for medical specialties should have biomedical and medical orientation, along with fundamentals of physics. Here biophysics is not separated but is stated parallel to physics in appropriate sections, as physics of live. Living organisms exhibit properties not found in inanimate objects. They grow, reproduce, and decay. Earlier scientists was thought that the large molecules in living matter could be produced only by living organisms through a "vital force" that could not be explained by the existing laws of physics. Today we know that there is no vital force! Living organisms are governed by the laws of physics on all levels! The textbook is intended for students, graduate students and lecturers of medical and biological specialties of universities.