Asociación Optimist Argentina
South America
ARG
Swiss Optimist
Europe
SUI
AHOoptimist
North America & Central
AHO
Bahamas Optimist Dinghy Association
North America & Central
BAH
Royal British Virgin Islands Yacht Club
North America & Central
IVB
Bermuda Optimist Dinghy Association
North America & Central
BER
Canadian Optimist Dinghy Association (CODA)
North America & Central
CAN
Cayman Islands Sailing Club
North America & Central
CAY
Asociación Dominicana de Optimist
North America & Central
DOM
Salvador Sailing Association
North America & Central
ESA
Grenada Sailing Association
North America & Central
GRN
Optimistas de Nicaragua
North America & Central
NIC
Puerto Rico Optimist Association (PROA)
North America & Central
PUR
St. Kitts Youth Sailing Association
North America & Central
SKN
Saint Lucia Sailing Association
North America & Central
LCA
La Fragata Sailing Club
North America & Central
CRC
Trinidad & Tobago Sailing Association (TTSA)
North America & Central
TTO
US Optimist Dinghy Association (USODA)
North America & Central
USA
Club Optimist Chile
South America
CHI
Federacion Colombiana de Vela
South America
COL
Federación Venezolana de Vela
South America
VEN
Belize Sailing Association
North America & Central
BIZ
Antigua Yacht Club
North America & Central
ANT
Turks and Caicos, Provo Sailing Academy
North America & Central
TCA
Sea Masters Academy Panama
South America
PAN
TJK Sailing
Asia
TJK