Wheaton College offers loan/scholarships to their graduate school for individuals intending to serve as missionaries. For every year of international service after graduation, twenty-five percent of the loan is forgiven and becomes a scholarship.
The Christian Medical and Dental Associations have a list of scholarships available to medical students and residents wishing to go into full-time missions after graduation.
Instead of offering scholarships, the Go Fund pays student debt for individuals who serve long-term in cross-cultural ministry to an unreached people group.