Theodor Jan Haraldsson (born 17 July 2005), known mononymously as Theo (formerly Theoz) is a Swedish social media personality, singer and actor. He started his career by posting videos to Musical.ly in 2016 with the name Theoz. In 2020, he had a leading role in the movie opposite Robert Gustafsson. In 2021, he performed his music at , which is broadcast on TV4. Theoz participated in Melodifestivalen 2022 with the song "", which finished 7th, and in Melodifestivalen 2023 with "Mer av dig", which finished 5th. He participated as a celebrity dancer in Let's Dance 2025 broadcast on TV4.
lv:Theoz lt:Theoz
Discography EPs Title Year Peak chart positions SWE Min Theori 2019 — Paradis 2022 — Julmusiken — Sped Up Collection 2023 — Mer av dig 7
Compilation albums Best of Theoz (2022)
Singles Title Year Peak chart positions Album SWE "Lately" 2018 — "" 53 Min Theori "Best Girl in the World" — rowspan="2" "Why Why Why" — "Theori" 2019 — Min Theori "" — "" — Julmusiken "Party Animal" 2020 — rowspan="3" "More" — "Hooked on a Feeling" 2021 — "" 2022 5 "Painkiller" — "Shady" — "" — "" — "Julmusiken" 73 Julmusiken "Mer av dig" 2023 2 Mer av dig "" — "Bara lite grann (Sommar igen)" — rowspan="5" "" — "" 2024 — "" — "" 2025 —
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