Alberta
Alberta Caregiver College - Support for Caregivers of Older Adults [1]
[...provides training for the primary caregivers of older adults, often who are frail or with chronic health issues.]
Alberta Council on Aging [2]
Alberta Centre for Active Living [3]
Calgary Seniors' Resource Centre [4] 
Edmonton Seniors Coordinating Council [5]
Golden Circle Senior Resource [6] 
Research on Aging, Policies and Praxis [7]
Rural Route to Active Aging [8]

Canada
Active Living Coalition for Older Adults [9](ALCOA)
ALCOA Research Update [10]
ALCOA Active Living Tips for Older Adults [11]
Canadian Association of Gerontology [12]
Canadian Fitness & Lifestyle Research Institute [13]
Global Action on Aging [14]
Internet Resources on Aging and the Aged [15] - University of Manitoba Libraries
Institute for Human Development, Life Course and Aging, [16] University of Toronto
National Institute of Nutrition [17]
National Indian and Inuit Community Health Representatives Organization [18]
Osteoporosis Society of Canada [19]
Principles of the National Framework on Aging [20] (PHAC)
Public Health Agency of Canada Division of Aging & Seniors [21]
University of Victoria Centre on Aging [22] - Publications

International
Aging Well [23] - A Health & Wellness Village for Mature Adults (USA)
Duke University Center for the Study of Aging and Human Development [24]
Western Michigan University Libraries: Gerontology [25] International Council on Active Aging (ICAA) [26]
International Society for Aging and Physical Activity (ISAPA) [27]
National Institute on Aging [28] Exercise for Older Adults [29] (USA)
Senior ACT: Activities for a Geriatric Setting [30]
Therapeutic Recreation Directory [31]
Wayne State University Library [32]