Book Abstract: The book gives a thorough overview of applications of the layer-by-layer (LbL) technique in the context of bioengineering and biomedical engineering where the last years have witnessed tremendous progress. The first part familiarizes the reader with the specifics of cell-film interactions that need to be taken into account for a successful application of the LbL method in biological environments. The second part focuses on LbL-derived small drug delivery systems and antibacterial agents, and the third part covers nano- and microcapsules as drug carriers and biosensors. The fourth and last part focuses on larger-scale biomedical applications of the LbL method such as engineered tissues and implant coatings.