2023–24 UEFA Women's Nations League B

The 2023–24 UEFA Women's Nations League B was the second division of the 2023–24 edition of the UEFA Women's Nations League, the inaugural season of the international football competition involving the women's national teams of the member associations of UEFA. The results were used to determine the leagues for the UEFA Women's Euro 2025 qualifying competition.

Format
League B consisted of 16 UEFA members ranked 17th to 32nd among competition entrants in the UEFA women's national team coefficient ranking. Teams were split into four groups of four. Each team played six matches within their group, using the home-and-away round-robin format with double matchdays in September, October and November to December 2023. The competition also acted as the first phase of the preliminary competition for UEFA Women's Euro 2025, which uses an identical league structure. The group winners were promoted to League A, while the fourth-placed team from each group, as well as the lowest-ranked third-placed team, were relegated to League C, taking effect in UEFA Women's Euro 2025 qualifying. In addition, the group runners-up of League B advanced to the promotion play-offs against the third-placed teams of League A. The winners of these home-and-away ties entered League A for UEFA Women's Euro 2025 qualifying, while the losers entered League B. Meanwhile, the three best-ranked third-placed teams in League B advanced to the relegation play-offs against the three best-ranked League C runners-up. The winners of these home-and-away ties entered League B for UEFA Women's Euro 2025 qualifying, while the losers entered League C.

Seeding
Teams were allocated to League B according to their UEFA women's national team coefficient after the conclusion of the 2023 FIFA Women's World Cup qualifying group stage on 6 September 2022. Teams were split into four pots of four teams, ordered based on their UEFA national team coefficient.

The draw for the league phase took place at the UEFA headquarters in Nyon, Switzerland in May 2023, 13:00 CEST. Each group contained one team from each pot. The draw started with Pot 1 and ended with Pot 4, with drawn teams assigned to the first available group in ascending order from B1 to B4. Due to the Belarusian involvement in the Russian invasion of Ukraine, Belarus and Ukraine could not be drawn in the same group.

Groups
Times are CET/CEST, as listed by UEFA (local times, if different, are in parentheses).

League ranking
The 16 League B teams were ranked 17th to 32nd overall in the 2023–24 UEFA Women's Nations League according to the following rules:
 * The teams finishing first in their groups are ranked 17th to 20th according to the results of the league phase.
 * The teams finishing second in their groups are ranked 21st to 24th according to the results of the league phase.
 * The teams finishing third in their groups are ranked 25th to 28th according to the results of the league phase.
 * The teams finishing fourth in their groups are ranked 29th to 32nd according to the results of the league phase.