This chapter looks at the domestic law around the concept of fault in Russia, regarding issues such as philosophical and theoretical principles, the influence of feminist and queer theory, the place of fault in the offence structure, forms of fault (intent, recklessness, negligence, constructive liability, strict liability), and reverse burdens of proof. Specific issues include exemptions from fault such as mistake of fact, transferred malice, mistake of law, insanity, diminished responsibility, loss of control, and any special rules applicable to children and juvenile offenders.