| Stefan Willemse | |
| Birth Date: | 12 April 1992 |
| Birth Place: | Paarl, South Africa |
| School: | Paarl Gimnasium |
| Position: | Flanker / Lock |
| Youthyears1: | 2011 |
| Youthyears2: | 2012 |
| Youthyears3: | 2013 |
| Years1: | 2013–2015 |
| Apps1: | 42 |
| Points1: | 40 |
| Years2: | 2016–2017 |
| Apps2: | 19 |
| Points2: | 0 |
| Years3: | 2016 |
| Apps3: | 4 |
| Points3: | 0 |
| Years4: | 2017 |
| Apps4: | 3 |
| Points4: | 5 |
| Years5: | 2017–2019 |
| Apps5: | 33 |
| Points5: | 20 |
| Years6: | 2020 |
| Clubs6: | Rugby ATL |
| Apps6: | 5 |
| Points6: | 0 |
| Years7: | 2020–2021 |
| Apps7: | 18 |
| Points7: | 0 |
| Years8: | 2022– |
| Amatyears1: | 2013–2014 |
| Amatapps1: | 16 |
| Amatpoints1: | 5 |
| Clubupdate: | 29 March 2022 |
Stefan Willemse (born 12 April 1992) is a South African professional rugby union player for the in the Currie Cup and in the Rugby Challenge. His regular position is flanker or lock.
Willemse played for the side during the 2011 Under-19 Provincial Championship competition, which saw the side progress to the final, where they lost to the . He moved to Durban in 2012 to join the . He made just three substitute appearances for the side in the 2012 Under-21 Provincial Championship competition, with an ankle injury curtailing his progress.[1]
Willemse then made the move to Port Elizabeth, where he joined Varsity Cup side . He was a key player for the team during the 2013 and 2014, helping them reach the semi-finals of the competition on both occasions.
He also made a single appearance for the side in their promotion/relegation play-off match against the side, but could not help the team win promotion to Division A.
At the conclusion of the 2013 Varsity Cup, Willemse was included in the squad for the 2013 Vodacom Cup, and made his first class debut against . He scored his first try in his next match, a 27–23 victory over the After a third substitute appearance in the next match against the – with Willemse once again scoring in a 27–23 victory – he started his first senior match in the EP Kings' quarter final match against the, scoring a try in his third consecutive match to help the EP Kings to a dramatic 34–31 victory. He made his second start in their 39–13 semi-final loss to the in Nelspruit.
He was retained for the senior side when the 2013 Currie Cup First Division season kicked off, making his first Currie Cup appearance in the opening fixture, when he started the match against the . He made a total of seven starts and four substitute appearances during the campaign, scoring five tries during the campaign (two in each of their matches against the and the and one more against the), helping the EP Kings to second place in the competition and subsequently winning promotion to the 2014 Currie Cup Premier Division.
He made two appearances for the Kings during the 2014 Vodacom Cup, as the Kings finished fifth in the Southern Section to miss out on a play-off spot. In June 2014, he was selected on the bench for the side to face during their 2014 tour of South Africa. He came on just before the hour mark as the Kings suffered a 12–34 defeat. He made his debut in the Premier Division of the Currie Cup during the 2014 season; he started their opening match of the season against in Port Elizabeth and played in the first eight rounds of the competition before an AC joint injury ruled him out of the last two rounds.[2]