| Bas Tietema | |
| Birth Date: | 29 January 1995 |
| Birth Place: | Zwolle, Netherlands |
| Height: | 1.85 m |
| Weight: | 74 kg |
| Discipline: | Road |
| Amateuryears1: | 2013 |
| Amateurteam1: | Vacansoleil Niederland Junioren |
| Amateuryears2: | 2014–2016 |
| Amateurteam2: | [1] |
| Amateuryears3: | 2019–2020 |
| Amateurteam3: | Allinq–Krush–de IJsselstreek |
| Amateuryears4: | 2021 |
| Amateurteam4: | Tour de Tietema Cycling Team |
| Proyears1: | 2017 |
| Proyears2: | 2018 |
| Proyears3: | 2022 |
| Proteam3: | [2] |
| Proyears4: | 2023 |
| Proteam4: | [3] |
| Manageyears1: | 2023– |
Bas Tietema (born 29 January 1995) is a Dutch former cyclist, who competed as a professional from 2017 to 2018 and again from 2022 to 2023.
Tietema originally played football in his childhood, but began cycling in 2010. After a fairly successful junior and under-23 career, Tietema retired from competition in 2019 due to skin allergies and loss of motivation. He then started a YouTube channel known as Tour de Tietema, where he uploads cycling videos with friends Josse Wester and Devin van der Wiel. As of May 2022, the channel has more than 250,000 subscribers. In 2021, the group started an amateur team known as the Tour de Tietema Cycling Team, as a challenge to attempt to win local races. Tietema gained back his desire to race, and then came in contact with UCI ProTeam after reportedly seeing improvements in his fitness.[4] In February 2022, he returned to professional cycling after officially joining .[4] [5]
In 2023, Tietema founded his own UCI Continental team,, partnering with Unibet.[6]