Aim of the study:
The study aimed to identify the level of psychological hardiness and the big five factors of the dominant personality,and to reveal the contribution of those factors in predicting psychological hardiness among counselors working in providing psychosocial support to refugees in Jordan.

Subject or material and methods:
The study sample consisted of (110) counselors, they were chosen by the purposive method. The researchers used a questionnaire as the study instrument that consisted of a sixty item of the big five personality factors scale and a twenty-six-item Psychological Hardiness scale

Results:
The results of the study showed the level of psychological hardiness was at a high level. The big five factors of dominant personality among the psychological counselors are in order: conscientiousness, openness, extraversion, agreeableness, all of them at a medium level, then neuroticism at a low level. The results also showed that the big five personality factors explained (48.3%) as a statistically significant predictor of counselor’s psychological hardiness.

Discussion:
There is an existence of a statistically significant of the big five personality factors in predicting psychological hardiness among psychological counselors working in providing psychosocial support services to refugees and it is consistent with the results of the various studies of different and special society categories.

Conclusions:
Organizations working with Refugees as the Institute for Family Health, the Center for Rehabilitation of Victims of Torture, the Child Protection Foundation, and the Society JRC for the rehabilitation of refugees, must invest the personal factors that characterize the counselors in improving their effectiveness in providing services and psychological support.