Research, Dietitian Salary. Research, Dietitian average salary is $39,890, median salary is $40,693 with a salary range from $27,270 to $52,000.Research, Dietitian salaries are collected from government agencies and companies. Each salary is associated with a real job position.esearch, Dietitian Salary. Research, Dietitian average salary is $39,890, median salary is $40,693 with a salary range from $27,270 to $52,000. Research, Dietitian salaries are collected from government agencies and companies. Each salary is associated with a real job position.