Blue Lake National Park was a former protected area in Queensland, Australia, located on North Stradbroke Island about 44 kilometres (27 mi) east of Brisbane.

Five major vegetation types have been mapped in the Blue Lake National Park: mid-high to tall open forest/woodlands dominated by Eucalyptus signata (Scribbly Gum), E. intermedia (Pink Bloodwood) and E. planchoniana (Planchon's Stringybark); sedgelands (freshwater swamps) dominated by Gahnia, Sieberana, and Baumea Spp.

The eastern tip of Blue Lake lies 1.75 km from the ocean at which point a white-sandy bottomed, fast flowing creek with steep fern covered banks, carries the Blue Lake overflow down to Eighteen Mile Swamp.

Most of the littoral and planktonic insects found in Blue Lake are common and widespread throughout Australia.

The conservation park was classified in 2008 as being an IUCN Category II protected area.