All dietitians are nutritionists, but nutritionists without a dietetics qualification can’t call themselves a dietitian.
While the definition of a dietitian and nutritionist are similar, there are differences in qualifications and regulation.
As a profession, nutritionists aren’t regulated and can have limited qualifications.
The dietetic profession is regulated. Most dietitians have graduated with an approved dietetics degree from an Australian university.
Dietitians with the Accredited Practising Dietitian (APD) credential commit to ongoing training and education throughout their careers. They adhere to a code of conduct. Dietitians have the knowledge and skills found in the National Competency Standards for Dietitians.