30-30 or variation, may refer to:

30–30 club, a term in baseball .30-30 Winchester, a rifle round ¡30-30!, Mexican artists' group, named after the rifle Thirty Thirty, a main character on BraveStarr television series Santana 30/30, a sailboat The Twin City-Twin 30, the first round of Adam Svensson in the PGA Tour’s 2025 3M Open. Alongside caddie Jace Walker, Adam shot pairs of 30 (30-30) on each nine. This included 9 birdies and an eagle on the par 5 18th hole.

See also

30 by 30 world initiative 30 for 30, ESPN TV series

3030 (disambiguation) 30 (disambiguation)