Streaming Services:
* Paramount+: Offers all seasons of the original series and the spin-off series "The Fairly OddParents: Fairly Odder"
* Amazon Prime Video: Available for rent or purchase
* Hulu: Offers some episodes, but not the full series.
* Netflix: Does not currently have Fairly OddParents.
Other Options:
* DVDs and Blu-rays: You can purchase the complete series on DVD or Blu-ray.
* Nickelodeon website and app: You can watch some episodes for free on Nickelodeon's website and app, but not the full series.
Note: Availability may vary depending on your region.
I hope this helps!