2009 in swimming

2009 in swimming documents the highlights of competitive international swimming during 2009.
World records.
The tables below lists all world records broken or equalled during 2009. Records are listed in each section in date order, with records which were subsequently broken later in the year with a khaki shaded background. Records which are yet to be ratified, or are awaiting ratification following the outcomes of the "Dubai Suits Charter" and related actions by the FINA Swimsuit Commission, are listed in italics. The records shaded in light blue were not ratified by FINA and are not to be considered as the world record for that event. The given references give further details regarding the non-ratification of the relevant records.
147 new world records were reported in 2009 (although some later disallowed), rewriting the world record progression in 69 of the 82 events in which FINA recognises world record standards.