Mandy is the English diminutive of Amanda — from the Latin amandus (worthy of love, lovable). A top-100 US baby name from 1976 to 1991, peaking at #82 in 1981. Mandy Moore (born 1984) — *American singer and actress; teen pop star with 2001's I Wanna Be With You and Candy (1999, #41 Billboard Hot 100); transitioned to film with A Walk to Remember (2002) and Tangled (2010, voice of Rapunzel). Played Rebecca Pearson on NBC's This Is Us (2016-2022) for six seasons — Emmy, Golden Globe, and SAG Award nominations. Sang "Always Remember Me" written for Tangled, Oscar-nominated 2011. Barry Manilow's "Mandy" (1974) — his first US #1 single, originally written as "Brandy" by Scott English about a dog (lyrics later revised to be about a woman). Mandy Patinkin is male (The Princess Bride, Homeland*). Mandy Rice-Davies — British showgirl in the Profumo affair (1963).
Featured throughout 2000s-2020s American film and TV.
Mandy does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Mandy reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.