There are several swimming championships specifically for junior swimmers. Some of the most notable ones include:

1. FINA World Junior Swimming Championships: Organized by the International Swimming Federation (FINA), this championship is held every two years and features young swimmers from around the world.

2. European Junior Swimming Championships: Managed by the European Swimming League (LEN), this annual event is for junior swimmers from European countries.

3. Junior Pan Pacific Swimming Championships: This event involves countries around the Pacific Rim and is held every two years, focusing on junior swimmers.

4. U.S. Junior National Championships: Organized by USA Swimming, this event is for junior swimmers in the United States and serves as a platform for young athletes to compete at a national level.

5. Australian Age Swimming Championships: This is a major event for junior swimmers in Australia, organized by Swimming Australia.

These championships provide young swimmers with the opportunity to compete at high levels and gain valuable experience on international and national stages.