A correction to the book "Convex Analysis and Monotone Operator Theory in Hilbert Spaces" by H.H. Bauschke and P.L. Combettes is announced. The original version was published without updating certain corrections in several chapters and back matter. These corrections have now been incorporated. The updated version can be accessed via the provided DOIs. The corrections include changes to equations, definitions, examples, and exercises. Notable changes include replacing "n × n" with "N × N", modifying the assumption in Fact 2.63, changing "a nonempty set" to "a nonempty finite set", and adjusting several equations and statements. Specific corrections involve replacing expressions in equations, changing the domain of functions, and modifying the conditions in propositions and corollaries. The corrections ensure consistency with display standards and address errors in the original publication. The updated book aims to provide accurate and consistent information across all chapters and sections.A correction to the book "Convex Analysis and Monotone Operator Theory in Hilbert Spaces" by H.H. Bauschke and P.L. Combettes is announced. The original version was published without updating certain corrections in several chapters and back matter. These corrections have now been incorporated. The updated version can be accessed via the provided DOIs. The corrections include changes to equations, definitions, examples, and exercises. Notable changes include replacing "n × n" with "N × N", modifying the assumption in Fact 2.63, changing "a nonempty set" to "a nonempty finite set", and adjusting several equations and statements. Specific corrections involve replacing expressions in equations, changing the domain of functions, and modifying the conditions in propositions and corollaries. The corrections ensure consistency with display standards and address errors in the original publication. The updated book aims to provide accurate and consistent information across all chapters and sections.