The 2023 IIHF U18 Women's World Championship Division I was two international under-18 women's ice hockey tournaments organized by the International Ice Hockey Federation (IIHF). Divisions I A and I B represent the second and the third tier of competition at the 2023 IIHF U18 Women's World Championship.
The Division I Group A tournament was played in Ritten, Italy, from 9 to 15 January 2023.
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The Division I Group B tournament was played in Katowice, Poland, from 10 to 15 January 2023.
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