The band and solo singer Corbin were each recognised in seven categories at the upcoming ceremony, which will air live from Las Vegas in December.
Lady Antebellum scooped nods in categories including 'Artist Of The Year', 'Album Of The Year' and 'Single Of The Year', while Corbin was named in groups including 'Artist Of The Year: Breakthrough Artist' and 'Single Of The Year: Male'.
Other stars who could be honoured at the event include Carrie Underwood, who picked up seven nods, and Miranda Lambert and Josh Turner, who were each named in five categories.
The show's executive producer Bob Bain explained in a press release that fans could vote for their favourite acts online, saying it meant "the awards will reflect what America is listening to and watching right now".
He added: "The ACAs will recognise traditional categories like 'Artist Of The Year' and 'Album Of The Year' but will also introduce a new honour for tours, resulting in one amazing night for country music."
The first annual American Country Awards will air live from the MGM Grand Garden Arena on December 6 from 8pm ET/PT on Fox.
> In Full: American Country Awards - Nominees