Paul Gallagher, 59, denied the charge when he appeared at Harrow Crown Court, which was sitting at Southwark Crown Court, on Friday,
He also pleaded not guilty to coercive and controlling behaviour, three counts of sexual assault, three counts of intentional strangulation, two counts of making a threat to kill, and assault occasioning actual bodily harm.
The alleged offences took place between 2022 and 2024, according to the charge sheet.
Oasis have returned to the UK for two final shows at Wembley as part of their Live '25 tour before they head to Japan and South Korea, Australia and South America.
The brothers arrived on stage on Saturday hand-in-hand, with Liam holding a maraca.
He greeted the rapturous crowd, saying: "Have you missed us?" before launching into anthems that included Some Might Say, Morning Glory and Roll With It.
The hits came thick and fast, but Liam paused at one point to say: "I want to dedicate this one to Paul Gallagher," before launching into Stand By Me.
Oasis announced their reunion tour in August last year, 16 years after their dramatic split in 2009 which saw Noel quit following a backstage brawl at the Rock en Seine festival in Paris.
The band also dedicated hit Live Forever to boxer Ricky Hatton, who died earlier this month at the age of 46.
Oasis will return to Wembley for the final British show of their Live 25 tour on Sunday.
