Best on Prime Video: X+Y Watch Guide
A TMDB-backed guide to X+Y, including cast, release facts, genres and watch-provider notes.

X+Y (2014) — an evergreen reference for this movie: the essentials, the cast, where to watch and what to watch next. True genius comes from opening your heart.
Where to watch
TMDB's U.S. watch-provider data lists Amazon Prime Video, Amazon Prime Video with Ads. Availability changes by country and date, so check your streaming app before watching.
Cast
Asa Butterfield as Nathan Ellis; Rafe Spall as Martin Humphreys; Sally Hawkins as Julie Ellis; Eddie Marsan as Richard; Jo Yang as Zhang Mei; Alex Lawther as Isaac Cooper; Alexa Davies as Rebecca Dunn; Martin McCann as Michael Ellis
About X+Y
A socially awkward teenage math prodigy finds new confidence and new friendships when he lands a spot on the British squad at the International Mathematics Olympiad.
More like X+Y
- Proof
- The Man Who Knew Infinity
- Good Will Hunting
- The Imitation Game
- Pi
- Extremely Loud & Incredibly Close
- The Unbreakable Boy
- Paycheck
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch X+Y?
TMDB's U.S. watch-provider data lists Amazon Prime Video, Amazon Prime Video with Ads. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of X+Y?
Asa Butterfield as Nathan Ellis; Rafe Spall as Martin Humphreys; Sally Hawkins as Julie Ellis; Eddie Marsan as Richard; Jo Yang as Zhang Mei; Alex Lawther as Isaac Cooper; Alexa Davies as Rebecca Dunn; Martin McCann as Michael Ellis
Is this X+Y guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



