Prompted by preparation of a presentation at a TA learning event, Part 1 of this paper provides a largely TA-based literature review of references to psychological boundaries, related to a proposed new framework for categorising such boundaries at the person (intrapersonal, personal), people (interpersonal, family, neighbourhood), place (region, country, area, continent) and planet (environment, Earth, Universe). TA concepts seen as relevant for each boundary are described. Comments on practitioner boundaries lead into Part 2, which addresses psychological bridges across boundaries such as created through supervision and frameworks for increasing awareness of unconscious processes. A critique of the current TA field of application boundaries is included and Part 2 concludes with a model that represents a general bridge to contact.Citation - APA format:Hay, J. (2018). Psychological Boundaries and Psychological Bridges: A Categorisation and the Application of Transactional Analysis Concepts. International Journal of Transactional Analysis Research & Practice, 9(1), 52-81. https://doi.org/10.29044/v9i1p52