Exeter have signed Wales back Robyn Wilkins, Scotland prop Panashe Muzambe and Australia lock Michaela Leonard for the new Premier 15s season.
Wilkins, 27, can play at centre or fly-half and joins from Worcester, having also played for Gloucester-Hartpury.
The daughter of former Wales men's international Gwilym Wilkins, she has won 59 caps for her country.
Muzambe, 26, joins from Watsonians while Leonard, 27 is a former captain at Canberra-based Brumbies.
They are the latest internationals to move to Sandy Park as the Chiefs aim to improve on their runners-up spot last season.
Eight internationals had already moved to Devon since last season, including England scrum-half Claudia MacDonald, Ireland hooker Cliodhna Moloney and Australia full-back Lori Cramer.