The Hematologist Directory has been prepared in order to speed up and facilitate access of adult and pediatric hematology specialists working in Turkey to each other's communication and institutional information. Consent was obtained from the hematologists of the Turkish Hematology Network Group to participate in the Hematologist Guide application and share their contact information. Only Turkish Hematology Network Group members can access the application content. There is information about the institution, medical school and specialty graduation information of the physicians who are members of the Turkish Hematology Network Group and have given permission to share their information, and information about the resources of the institutions they work for. Member physicians can search and list results by using city, name, surname, institution type filters.