Sandrine is the French elaborated form of Sandra — from the Greek Aléxandros (defender of the people). Sandrine Bonnaire (born 1967) — French actress; 2x César Award winner for Best Actress in À nos amours (1983, Most Promising Actress) and Vagabond (1985, Best Actress); Maurice Pialat's À nos amours premiered at the Venice Film Festival when Bonnaire was 16; Agnès Varda's Vagabond (1985) won the Golden Lion at the Venice Film Festival; Joan of Arc (1994), L'instinct de mort (2008); over 80 films across her career; one of the most-iconic French actresses of her generation. (1996). Sandrine Piau (born 1965) — French operatic soprano. Princess Sandrine — modern French naming. Sandrine Mazetier — French politician.
Sandrine 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 Sandrine reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.