ACTRIMS (Americas Committee for Treatment and Research in Multiple Sclerosis) is an annual conference for health professionals and researchers in the USA and Canada. It is sometimes held jointly with the Consortium of MS Centers (CMSC).
The equivalent organisation in Europe is ECTRIMS (European Committee for Treatment and Research In Multiple Sclerosis). Every three years the two organisations hold a joint conference. The most recent of these took place in Paris in October 2017.