As of 2023, there are only a few countries that have aircraft carriers in their arsenals. The number of aircraft carriers by country varies, with most countries having no aircraft carriers, and only a select few having at least one. Here is a list of countries that have operated aircraft carriers, along with the number of aircraft carriers they have in service, decommissioned, under construction, and never completed, according to the Wikipedia page on the list of aircraft carriers:

• Argentina: 0 in service, 2 decommissioned, 0 under construction, 0 never completed
• Australia: 0 in service, 3 decommissioned, 0 under construction, 0 never completed
• Brazil: 0 in service, 2 decommissioned, 0 under construction, 0 never completed
• Canada: 0 in service, 3 decommissioned, 0 under construction, 0 never completed
• China: 2 in service, 0 decommissioned, 1 under construction, 0 never completed
• France: 1 in service, 7 decommissioned, 1 under construction, 7 never completed
• Germany: 0 in service, 0 decommissioned, 0 under construction, 7 never completed
• India: 2 in service, 2 decommissioned, 1 under construction, 0 never completed
• Italy: 2 in service, 0 decommissioned, 1 under construction, 2 never completed
• Japan: 2 in service, 20 decommissioned, 0 under construction, 4 never completed
• Netherlands: 0 in service, 4 decommissioned, 0 under construction, 0 never completed
• Russia: 1 in service, 4 decommissioned, 0 under construction, 2 never completed
• Spain: 1 in service, 2 decommissioned, 0 under construction, 1 never completed
• Thailand: 1 in service, 0 decommissioned, 0 under construction, 0 never completed
• Turkey: 1 in service, 0 decommissioned, 0 under construction, 0 never completed
• United Kingdom: 2 in service, 41 decommissioned, 0 under construction, 11 never completed
• United States: 11 in service, 55 decommissioned, 3 under construction, 12 never completed

According to the Global Firepower website, as of 2023, the countries with the most aircraft carriers are:

• United States: 11
• China: 2
• India: 2
• Italy: 2
• United Kingdom: 2

It is worth noting that some countries have smaller carriers that can alternate roles depending on their current air fleet, such as Spains Juan Carlos I, which functions as a helo carrier when carrying a full fleet of 30 helicopters, but as a light aircraft carrier when its fleet consists of 10-12 helicopters and 10-12 planes.