Marni is a Scandinavian and Hebrew-adjacent name, often treated as a variant of Marnie (itself a nickname for Marina or Margaret), with a clean, modern sound that has never crowded the top charts. On a pet it reads as the name of a cool owner: someone who named their cat before the trend, not because of it.
Fashion-World Association
Marni is also the name of the Italian luxury fashion house founded by Consuelo Castiglioni, known for its playful use of color and pattern. A pet named Marni carries a quiet fashion-insider signal for owners who know the brand. Devon Rex cats and whippets — lean, aesthetically striking animals — suit the Marni register.
Human-Pet Crossover
The human name Marni has Hitchcock associations: the 1964 film Marnie starring Tippi Hedren gave the name a mysterious, slightly unsettled quality that some owners find appealing on a cat. Marni vs. Marnie is a simple spelling choice with different aesthetic connotations.
The Counter-Reading: Obscurity Risk
Marni is uncommon enough that it will require repeated spelling out at the vet. Owners who like the sound but want easier recognition might consider Marina as a full form.