Owen played club rugby for Welsh regional team the Scarlets and featured in the Wales under-20 national team; helping Wales to third in the 2012 IRB Junior World Championships. Initially part of the Ospreys, William's featured regularly in their under-16s and under-18s teams before being signed for the Scarlets in 2010.
After joining the Scarlets in 2010, Williams made 30 appearances for Llanelli, including the 2012 Premiership Final against Pontypridd, and made his senior Scarlets debut in the LV= Cup match against the Dragons in February 2011.
Owen was a member of the Wales Under-20s squad that finished third in the 2012 IRB Junior World Championships in South Africa. Although he did not play for the Scarlets at all in 2011/12 as he gained more experience in the domestic Welsh league, he clocked up 14 games in 2012/13 including the man-of-the-match performance against Tigers.
After 81 appearances with the Tigers, Williams was signed by Gloucester Rugby for their 2017/18 season.
He was immediately recalled to the Wales squad for the 2020 Six Nations with a total of 3 caps to his name. On 11 January 2017, Williams left Leicester for Premiership side Gloucester Rugby from the 2017/18 season.
Williams was sidelined for almost a year after sustaining an injury against the Harlequins in 2019 and only returned to action in January 2020.
In July 2020, he signed for Japanese Top League side NTT Docomo Red Hurricanes. Williams will join Worcester Warriors from Japanese club Red Hurricanes and will bring seven years of Premiership experience with him having played for Leicester Tigers between 2013 and 2017 and for Gloucester Rugby until the end of last season.
After the close down of Worcester Warriors (2021/22) Williams was lucky to join Ospreys and produced the form to make Warren Gatland take note. Williams wore the no.10 jersey for Wales for the first time when they played against England.
Ahead of the Rugby World Cup 2023, Williams has been named in the training squad for Wales.
ML August 2023
Career
 |
Llanelli RFC Fly Half |
|
 |
Ospreys Fly Half |
2022 - present |
 |
Wales U20's Fly Half |
2012 - 2012 |
 |
Scarlets Fly Half |
2010 - 2013 |
 |
Leicester Tigers Fly Half |
2013 - 2017 |
 |
Gloucester Rugby Fly Half |
2017 - 2020 |
 |
NTT DoCoMo Red Hurricanes Osaka Fly Half |
2020 - 2021 |
 |
Worcester Warriors Fly Half |
2021 - 2022 |
 |
Barbarians Inside Centre |
2022 - 2023 |
 |
Wales Fly Half |
2013 - 2023 |
