This paper examines the efficacy of a short-term mentoring program in building cross-cultural friendships between students at an Australian university. Using a quasi-experimental approach, our study found that the mentoring program (Local Aussie Mentoring Program-LAMP) increased cross-cultural interactions for mentees, but not for mentors. About 45% of both mentors and mentees wished to continue their relationship with mentoring partners after the completion of the mentoring requirements. Mentees spent significantly more time with cross-ethnic friends than did controls after the completion of LAMP. We examined whether multicultural aspects of personality, as measured by the Multicultural Personality Questionnaire (MPQ), would positively correlate with cross-cultural mentoring effectiveness and cross-cultural friendship interactions (the dependent variables). Multicultural personality aspects of mentors (as measured by the MPQ) had significant positive relationships with both mentee and mentor-rated mentoring measures. All mentor MPQ scales showed some significant but small and positive relationships, with mentor friendship items, particularly Open-mindedness, Cultural Empathy and Emotional Stability. We found a significant, positive relationship between mentee Cultural Empathy and Social Initiative with cross-cultural friendship. These results show some partial support for a positive relationship between MPQ scales and cross-ethnic friendships.