Millwall Football Club is delighted to announce that Shaun Williams has put pen-to-paper on a one-year contract extension at The Den.
The 31-year-old will remain in South London until the summer of 2020.
Williams joined Millwall from MK Dons in January 2014 and has since gone on to make 203 appearances in The Lions' engine room, scoring 16 goals, and has become a key ingredient in the success of the club under the stewardship of Neil Harris in recent years.
The midfielder has found the net twice this season - in the 2-1 Sky Bet Championship win over Derby County and the 3-2 Carabao Cup Second Round victory against Plymouth Argyle - and also notched his first goal for the Republic of Ireland in a UEFA Nations League loss to Wales in Cardiff earlier this month.
Williams said: "I'm really pleased to extend my time at Millwall. I'm very settled at the club, am enjoying my football, and my family feel at home in the area, so all in all, it was a complete no-brainer.
"On a personal level I've been pleased with my form over the past 12 months and feel as good as I have done at any time in my career so far."
Lions boss Harris added: "I'm delighted that Willo has extended his contract with the club. He has been a focal point in our team over the last three years and a leader on and off the pitch.
"His new contract is warranted by performances over the last 12 months. I look forward to working with him in the short and long-term future."