

Introduction
Lia Dekker (born 24 January 1987) is a Dutch swimmer who specializes in breaststroke. Dekker holds the national record in the 200 metres breaststroke in the 50 m pool. She is the younger sister of Inge Dekker, 2008 Olympic champion in the 4×100 metre freestyle relay.
Swimming career
At the Dutch National Championships in June 2008, Dekker qualified for the European SC Championships 2008 in Rijeka, Croatia. A week before the European Championships, Dekker broke the national record in the 200 m breaststroke, which was set by Linda Moes during the 1988 Olympics in Seoul, South Korea. The day after she also lowered the national record in the 100 m breaststroke, held by Moniek Nijhuis since 2007. In Rijeka, Dekker placed 18th in the 100 m breaststroke and 20th in the 200 m breaststroke. At the Amsterdam Swim Cup 2009 she qualified herself for the 2009 World Aquatics Championships in Rome, Italy in the 100 m breaststroke, although she lost her national record to Nijhuis. In the 200 m breaststroke Dekker lowered her own national record by two seconds, but failed to qualify for Rome for this event.
Personal bests
| Long course | |||
|---|---|---|---|
| Short course | |||
| Event | Time | Date | Location |
| 50 m breaststroke | 32.78 | 2008-11-22 | Winschoten, Netherlands |
| 100 m breaststroke | 1:08.04 | 2008-12-19 | Amsterdam, Netherlands |
| 200 m breaststroke | 2:27.14 | 2008-12-20 | Amsterdam, Netherlands |
| Long course | |||
| Event | Time | Date | Location |
| 50 m breaststroke | 32.18 | 2009-04-16 | Amsterdam, Netherlands |
| 100 m breaststroke | 1:07.47 | 2009-04-17 | Amsterdam, Netherlands |
| 200 m breaststroke | NR 2:28.02 | 2009-04-19 | Amsterdam, Netherlands |
| Event | Time | Date | Location |
| 50 m breaststroke | 32.78 | 2008-11-22 | Winschoten, Netherlands |
| 100 m breaststroke | 1:08.04 | 2008-12-19 | Amsterdam, Netherlands |
| 200 m breaststroke | 2:27.14 | 2008-12-20 | Amsterdam, Netherlands |
| Event | Time | Date | Location |
| 50 m breaststroke | 32.18 | 2009-04-16 | Amsterdam, Netherlands |
| 100 m breaststroke | 1:07.47 | 2009-04-17 | Amsterdam, Netherlands |
| 200 m breaststroke | NR 2:28.02 | 2009-04-19 | Amsterdam, Netherlands |