2023–24 Boston Bruins season

The 2023–24 Boston Bruins season was the 100th season (99th season of play) for the National Hockey League franchise that was established on November 1, 1924. The Bruins entered the season as the defending Presidents' Trophy winners, having finished the previous season with a 65–12–5 record that set the record for the most wins and points in an NHL season. Longtime Bruins players Patrice Bergeron and David Krejci retired during the off-season, with key players such as Tyler Bertuzzi, Connor Clifton and Dmitry Orlov also leaving during free agency and Taylor Hall departing via trade. Consequently, this was the Bruins' first season without Bergeron since 2002–03. The Bruins signed veteran free agents such as Kevin Shattenkirk and James van Riemsdyk, while also promoting youth talent in the form of John Beecher and Matt Poitras to the main roster. Brad Marchand was named the team's 27th team captain on September 20, 2023, succeeding Bergeron.

On March 28, 2024, the Bruins clinched a playoff berth for the eighth straight season. As a result, they maintain the NHL's longest active playoff streak, alongside the Toronto Maple Leafs, whom they faced in the first round, winning in seven games. In the second round, the Bruins faced the Florida Panthers, losing in six games to the eventual Stanley Cup champions, marking the second consecutive season the Bruins were eliminated by the Panthers.

Regular season
The Boston Bruins regular season schedule was released on June 27, 2023.

Goaltenders
†Denotes player spent time with another team before joining the Bruins. Stats reflect time with the Bruins only.

‡Denotes player was traded mid-season. Stats reflect time with the Bruins only.

Transactions
The Bruins have been involved in the following transactions during the 2023–24 season.

Key:

Contract is entry-level. Contract initially takes effect in the 2024–25 season.

Trades
Notes
 * Bruins will receive this pick if Maroon plays at least one playoff game
 * Senators retain 25% of Korpisalo's salary