This paper on family farms is in the form of an historical review complemented by current and future perspectives from North America, China, Brazil and Europe. The literature review demonstrates the multiple discourses, concepts and methodologies which underpin contemporary understandings of the family farm. The authors argue that family-based farming units are ubiquitous in most agricultural systems and take on many different forms and functions, conditioned by the structure of agriculture in different locations and political systems. Our review accepts this diversity and seeks to identify some key elements that inform our understanding of the sustainability of family farming, now and in the future. The term ‘family’ is the differentiating variable and behooves a sociological approach. However, economists can view the family farm as an economic unit, a business and even a firm. Geographers see family farms consigned to the margins of good land areas, and political scientists have seen family farms as a class. What emerges is a semantic enigma. As an imaginary term, ‘family farming’ is useful as a positive, universally valued ideal; as a definable entity on the ground, however, it is difficult to classify and measure for comparative policy and research purposes. This ambiguity is utilized by governments to manage the increasing capitalization of farm units while projecting the image of wholesome production of food. The case studies demonstrate the diversity of ways in which family farming ideologies are being mobilized in contemporary agrarian change processes. The notion of ‘land to the tiller’ is resonant with historic injustices in Scotland and Brazil, where family-based agriculture is understood as the ‘natural’ order of agricultural production and actively supported as an historic ideal. In contrast, in the Chinese context, ‘land to the tiller’ is a political means of increasing capital penetration and economic sustainability. Evidence from China, Brazil and Scotland demonstrates the active role of governments, coupled with symbolic ideologies of farming, which suggest that the longevity (i.e., sustainability) of family farming will continue.