Differentiation between "happiness" and "pleasure" has always been a very important and crucial fact in psychology and philosophy. More important than this has been determining and aassessment of the correlatives that can increase or improve the happiness, and this has been the main purpose of this research. The research method was descriptive and correlational and the statistical population was all of the students of Shahid Bahonar Medical sciences, Islamic Azad, and Payam-e-Nur Universities of Kelman City in the academic year 2005- 2006 that 573 students were chosen among them using relative stratified sampling method. The tool used- for 'obtaining the necessary data was questionnaire which was designed by the researcher and assessed, "scientific, artistic moral and religious attitudes and behaviors; happiness and some individual variables" of the university students. The validity and reliability of the questionnaire was determined 0.913 and 0.815 respectively. Spearman, Kendall's Tau and chi-square tests were used for analyzing the research data. The results of the research showed that there was a positive and meaningful relationship between "scientific attitude, scientific behavior, artistic behavior, moral attitude, moral behavior, religious attitude and religious behavior" with the "happiness" of the university students, but there was not a meaningful relationship between "age, grade, diploma grade-point average, total grade-point average, the credit hours passed, gender, place of residence, kind of university and kind of faculty" with the "happiness" of the university students, although there was a meaningful relationship between "place of birth" and the "happiness" of the university students. Therefore, it is suggested that the ways of creating happiness in the university students to be sought in such factors as knowledge, art, morality and religion.