Haslar Naval Base is a former naval base located in Gosport, Hampshire, England. Established in the 18th century, it served as a key facility for the Royal Navy and played a significant role during both World Wars. The base was primarily used for shipbuilding, repair, and maintenance. In 2006, Haslar Naval Base was officially closed, and its facilities have since been repurposed for various civilian uses. The site is now home to residential developments, businesses, and community spaces, reflecting the transition from military to civilian life while preserving its historical significance.