Focused practice within family medicine may be increasing globally, but there is limited research on the factors contributing to decisions to focus practice. To examine the factors influencing resident and early-career family physician choices of focused practice across three Canadian provinces. A subset of qualitative interview data were analysed from a study across British Columbia, Ontario, and Nova Scotia, Canada. Included in the analysis were a total of 22 resident family physicians and 38 early-career family physicians in their first 10 years of practice who intend to or currently practise in a focused area. Comparisons were made for participant types, provinces, and the degree of focused practice, while identifying themes related to factors influencing the pursuit of focused practice. Three key themes were identified of factors contributing to choices of focused practice: self-preservation within the current structure of the healthcare system; support from colleagues; and training experiences in medical school and/or residency. Minor themes included: alignment of practice with skills, personal values, or ability to derive professional satisfaction; personal lived experiences; and having many attractive opportunities for focused practice. Both groups of participants unanimously viewed focused practice as a way to circumvent the burnout or exhaustion they associated with comprehensive practice in the current structure of the healthcare system. This finding, in addition to other influential factors, was consistent across the three provinces. More research is needed to understand the implications of resident and early-career family physician choices of focused practice within the physician workforce.