Date of Birth: 
Place of Birth: Münster, North Rhine-Westphalia, Germany
About Caroline Ruhnau
- Caroline Ruhnau (born 16 October 1984) is a German swimmer.
- She competed at the 2012 Summer Olympics in the 100 m breaststroke, but failed to reach the final.
- She won this event at the European Short Course Swimming Championships 2009.
- She also won two bronze medals at European long-course championships in 2010 and 2012.Her younger sister Alice is also a breaststroke swimmer.
- She swam on the next lane to Caroline at the Olympic trials in 2012.
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