Since technologies have been developing rapidly, new devices and systems will be created and provided faster and more efficiently. The demand for ICT careers in ICT industries is very high and the industries also require these people highly. Professionals in ICT careers should have technical expertise in computer systems, hardware and networks, and they should have exceptional problem solving and analysis. Knowledge and skills concerning with ICT careers are continually changing without certain. As a result, it is difficult to make the decision for improving skills. The purpose of this paper was to present algorithm for selecting the proper ICT skills for ICT careers. The uncertain and diverse ICT skills are decisionmaking problems, which can be solved by using the theory of association rule method. This method focuses on defining ICT skills. The ICT skills are one part of the group of career based on the standard of ISCO-08. The results demonstrate the appropriate skills for each ICT career. Therefore, ICT professionals are able to improve their knowledge by training skills properly for their careers.