Heaviest bass fish caught in competition

- Who
- James McAdam Jr
- What
- 255.6 kilogram(s)
- Where
- United States (Anacapa Island,)
- When
- 20 August 1968
According to the International Game Fish Association (IGFA), the heaviest bass ever caught was a giant sea bass (Stereolepis gigas) with a weight of 255.6 kg (563 lb 8 oz). James McAdam Jr caught it on 20 August 1968 on Anacapa Island, California, USA.
The bass measured 226.06 cm (7 ft 5 in) long and had a girth of 182.88 cm (6 ft 1 in).