The 2025 King's Birthday and Operational Honours are appointments by some of the 15 Commonwealth realms of King Charles III to various orders and honours to reward and highlight good works by citizens of those countries. The Birthday Honours are awarded as part of the King's Official Birthday celebrations during the month of June. The honours list for the United Kingdom was announced on 14 June 2025. The 2025 Operational Honours (June) were awarded embedded with the Birthday Honours list.

The King appoints members to the orders upon the advice of his ministers. However, the Order of the Garter, the Order of the Thistle, the Order of Merit and the Royal Victorian Order are bestowed solely by the sovereign.

In the 2025 Birthday Honours, former rugby league player Billy Boston received a knighthood for his services, becoming the first rugby league personality to have that honour. His knighthood was made public earlier than the official announcement due to concerns regarding Boston's health. The knighthood came one week after media criticism regarding the fact that no one from the sport had ever been knighted, with analysts stating that this is an illustration of how people from working class backgrounds are overlooked in the honours lists. In the previous honours list, the BBC reported that 4% of recipients were from a working class upbringing.

Below are the individuals appointed by Charles III in his right as King of the United Kingdom with honours within his own gift, and with the advice of the Government for other honours.

The King has been graciously pleased to give orders for the following Honorary appointments in His Majesty’s Army to the rank of Field Marshal.

The 2025 King's Birthday Honours for Australia were announced on 9 June 2025 by the Governor-General, Sam Mostyn.

See 2025 Canadian honours

The 2025 Birthday Honours for New Zealand were announced on 2 June 2025 by the Governor-General, Dame Cindy Kiro.