|Family:||Fin McCloud (sister), four brothers, mother, father, grandma, dogs|
|Voice Actor:||Megan Fahlenbock|
|First Appearance:||Welcome to Paradise, Dudes!|
Sam McCloud is Fin's sister (presumably younger than Fin). She also has four brothers. She and Fin are somewhat close, seeing as Fin often turns to Sam to talk to, even though once Fin said in "Another Grom Bites the Dust" that she hated Sam (although Fin probably didn't mean it, seeing as how she was mad and stressed at the time she said it). Also in that episode, Sam borrowed one of Fin's movies and her longboard. She also lives in Fin's room during the summer. She is never seen on screen and is voiced by Megan Fahlenbock.
- Sam is a surfer just like her sister, but it is unknown if she is a good surfer.
- Megan Fahlenbock is not currently listed as part of the voice cast.