
This research was conducted to analyse the influence of Islamic Work Ethics, affective commitment and altruism against knowledge sharing behaviour. The population in this study is a Doctoral Management student who is working in another organization or institution, in five universities in Yogyakarta. The population also exist in 5 universities in the Special Region of Yogyakarta. The sample in this study were 130 respondents. This research uses purposive sampling method to get the sample. The results of this study indicate that: 1) Islamic work ethics has significant result on altruism; 2) Affective commitment has no significant effect on altruism; 3) Islamic work ethics has significant influence on knowledge sharing behaviour; 4) Affective commitment has a significant effect on knowledge sharing behaviour; 5) Altruism has significant influence on knowledge sharing behaviour.