Principles of Knowledge Representation and Reasoning, Incorporated (KR Inc.) is a not for profit Scientific Foundation incorporated in the state of Massachusetts of the United States of America, concerned with fostering research and communication on knowledge representation and reasoning.

Its primary activities include organizing a series of prestigious conferences, the conferences on Principles of Knowledge Representation and Reasoning, cooperating with workshops on related topics, maintaining informational materials on the World Wide Web, and maintaining KR-related mailing lists.

The 21^th International Conference on Principles of Knowledge Representation and Reasoning (KR 2024), will be held in Hanoi, Vietnam, 2024.

The General Chair of KR 2024 is Pierre Marquis; the Program Chairs are Magdalena Ortiz and Maurice Pagnucco; the Local Arrangements Chair is Tran Cao Son.

We look forward to welcoming you to Hanoi in 2024!