Teen pregnancy has declined throughout North America in the 1990s. In Yukon Territory, Canada, teen pregnancy in the late 1990s was almost 40% lower than in the early 1990s. This rate of decline is significantly greater than most recently reported national rates of teen pregnancy decline in Canada and United States. Identifying possible causes of the Yukon decline may help policy makers and program managers plan and implement teen pregnancy prevention strategies. Data on Yukon teen pregnancy prevention initiatives were collected through numerous discussions and interviews with Yukon service providers, teens, and the general public between 1994 and 2001. Analysis of data demonstrates that multiple new initiatives spanning many sectors were implemented in the mid and late 1990s that could have contributed to the decline in Yukon teen pregnancy. A multi-dimensional approach to teen pregnancy prevention that included researching and evaluating family planning programs and policies before, during, and after implementation, increasing access to longer-acting hormonal contraceptives, providing continuing family planning medical education to health care providers and other youth service providers, subsidization of contraceptives, delivery of innovative family planning mass media campaigns, and delivery of ongoing sexual health education programs may have significantly contributed to the decline in Yukon teen pregnancy. Collaboration among service providers across many service sectors (clinical, public health, education, First Nations, government communication and policy, grassroots) facilitated coordination of the multi-dimensional approach.