The name Lilian is a girl's name of English origin. Lilian is ranked #589 on our popularity charts and is often added to lists like Three-Syllable Baby Names and discussed in our forums with posts like "Girls Makeover - Two Middles".
From the experts:
Lilian is the far less popular than the ‘Lillian’ spelling. To avoid a lifetime of mistakes and misspellings, we suggest you go with the Lillian spelling, which also looks more polished on paper. Whichever spelling you prefer, these names are benefitting from the fashion for girls' names starting with L.