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A3 problem solving

Structured problem improvement approach

Wikipedia contributorsAdapted for Fathomly · View authors
1 min read
Source updated March 24, 2026
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A3 problem solving is a structured problem-solving and continuous-improvement approach, first employed at Toyota and typically used by lean manufacturing practitioners. It provides a simple and strict procedure that guides problem solving by workers. The approach typically uses a single sheet of ISO A3-size paper, which is the source of its name. More contemporary versions include the Systems-oriented A3 (or S-A3)

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This article is adapted from the Wikipedia article “A3 problem solving”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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