The 16th ACM International Conference on Web Search and Data Mining (WSDM 2023) was successfully held on 2/27 - 3/3/2023 at Carlton Hotel, Singapore. It was held as in-person conference that also featured rich virtual elements. The five-day event began with tutorials and Industry Day. The middle three days were dedicated to keynote speeches, single-session presentations, poster reception, and demo sessions. The final day was event-filled with workshops, WSDM Cup Day, Doctoral Consortium, and Smart City Day. This brief report provides an overview of WSDM 2023 with organization and program details and statistics from Conference Chairs and Program Committee Chairs, as well as a message from the WSDM Steering Committee Chair. Further details can be found at https://www.wsdm-conference.org/2023/. At the conclusion of this report, we express our deep gratitude to authors, volunteers, special interest groups (SIGs), steering committee, sponsors and supporters.