Emily Bett Rickards (born July 24, 1991) is a Canadian actress, known for portraying Felicity Smoak on The CW television series Arrow as well as its spinoff series The Flash, Vixen, Legends of Tomorrow and related show Supergirl.\n\nAnswer this question based on the passage: who is the actress who plays felicity in arrow?
Step-by-step reasoning:
Emily Bett Rickards
The relevant information is: Emily Bett Rickards (born July 24, 1991) is a Canadian actress, known for portraying Felicity Smoak on The CW television series Arrow as well as its spinoff series The Flash, Vixen, Legends of Tomorrow and related show Supergirl.

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Thus, the answer is Emily Bett Rickards