Miller, who has been a free agent since being released by QPR in May, has signed a two-year contract with Hibernian.
“I am delighted that we have secured the services of a player with the experience and qualities of Liam Miller,” Hibs boss John Hughes told his club’s official website.
“I said at the end of the transfer window that we would not stop looking for the type of player we felt would enhance our squad, and I don’t think there is any doubt that Liam will do that.
“When you look at the clubs Liam has played for, you know that he is a footballer of real quality, and at 28 years old is at an age where his best years are still ahead of him.”
“I am excited about joining Hibernian and have been very impressed with the set-up at the training centre and within the club,” Miller said.
“I’m really looking forward to playing football in Scotland again, and can’t wait to start training with the boys and competing for a place in the team.”