Criminal cases are the cases that involve the process in which legal assistance is most needed. Criminal law protection measures such as search, seizure, arrest, detention, arrest; interfere with personal freedom through court decisions, such as a judicial fine or a prison sentence. When a crime is committed, an investigation is carried out by the prosecutor's office, and when a criminal case is opened, a trial is carried out by the court. Those who participate in all these processes as suspects, accused or complainants should definitely seek professional legal assistance. In judicial processes, if the right of defense of the complainant, suspect, or accused is not provided by a criminal lawyer, loss of rights is inevitable. It is a sub-branch of public law that examines the punishments given for the correction of the individuals who committed these crimes by categorizing the crimes existing in the society and determining their elements. Our office provides the following services in this field; *Criminal cases of peace *Criminal cases of the first instance *Heavy criminal cases *Enforcement criminal cases *Follow-up of the investigation phase and being present during the statements phase *Processes and negotiation stages with creditors due to check complaint Kahraman Law Firm tries to provide effective advocacy and legal consultancy services to its clients by considering the theory and practice of criminal law together.