The McLaren MCL60 is a Formula One car designed and constructed by McLaren, initially under the direction of James Key, to compete in the 2023 Formula One World Championship.

The car made its competitive début at the 2023 Bahrain Grand Prix. It was driven by Lando Norris and Oscar Piastri, Norris for his fifth season with McLaren and Piastri in his rookie year. The initial specification of the MCL60 proved uncompetitive, exhibiting inefficient and draggy aerodynamic performance and high tyre degradation. Its poor performance led to Key's departure from the team in March 2023, and he was replaced by a new structure of technical directors. Peter Prodromou and Neil Houldey took over the development of the MCL60. An upgrade package delivered at the Azerbaijan Grand Prix, the fourth round of the season, was the final development produced under Key's leadership.

Beginning with the Austrian Grand Prix, the ninth round of the championship, the new technical leadership delivered a significant upgrade package to the car, which began a marked improvement in the team's results. Another substantial package was delivered at the Singapore Grand Prix. Once the initial Austrian–British package had been fitted, the MCL60 went on to achieve nine podiums and three fastest laps in Grands Prix. Further, the car achieved two sprint poles and four sprint podiums including one victory. By the season's end, the MCL60 was noted as a capable and competitive all-rounder and the only consistent challenger to Red Bull Racing's dominant RB19. Its remaining shortcomings were primarily its comparatively poorer tyre management and tricky handling. The change in design direction was praised as highly effective and successful to a degree not seen in modern Formula One and appeared to influence the development programs of several other teams.

The car was originally referred to by McLaren and the press as the MCL37, a continuation of the numbering scheme that began in 1981 with the McLaren MP4/1 (although the MP4 prefix was replaced by MCL in 2017 following the departure of Ron Dennis from the team). However, McLaren announced that the car would be named the MCL60 to commemorate 60 years since Bruce McLaren founded the team in 1963.

A new generation of technical regulations began in the 2022 season. The MCL36, the MCL60's immediate predecessor, appeared competitive during its first testing appearance yet proved to have a significant issue with brake overheating. These issues limited its performance capabilities in the early stages of the season and delayed much of the car's development.

Then-team principal Andreas Seidl stated in September 2022 that only part of the MCL36's concept would be continued in its successor. Technical director James Key said the team hoped the MCL60 would require less in-season development compared to the MCL36. However, Key later revealed that the team had realised in September 2022 that the regulation changes to floor height would have an unavoidable negative impact on the car given its overall design philosophy, and began work on a new concept. However, the new concept had not matured enough to be used at launch and it was delayed for introduction during the early season.

In November 2022, Seidl stated he believed the team's struggles with the MCL36 would have an impact on the MCL60, namely that the lack of testing for the MCL36 and the time required to address its brake issues had delayed the start of development for the MCL60. Seidl, who was originally set to leave the team at the end of 2025 for the incoming Audi project, departed in mid-December 2022 to fill the vacancy at Sauber caused by the sudden exit of chief executive officer Frédéric Vasseur. Seidl was immediately replaced by Andrea Stella, who had been McLaren's executive director of racing.

At its launch, the car was considered an evolution of its predecessor, which had itself undergone heavy development during the 2022 season. It retained the unusual front pullrod, rear pushrod suspension layout that was reintroduced with the MCL36. The MCL60 featured tighter sidepod geometry with a more aggressive undercut, partly intended to free up space for ground effect inlet tunnels. The radiator inlet on the engine cover was lengthened, closer to the style of the inlet seen on the 2022 Ferrari F1-75. The floor edge cut-out was shifted forwards, closer to its positioning on most other teams' cars.