





| Ila | from the island |
| Iva | from the yew tree |
| Jaqueline | feminine form of Jacques (supplanter) |
| Jacquenette, Jacquenetta | little Jacques |
| Jeanette, Jeanetta | little Jean |
| Jeanne, Jehane | feminine form of Jean (God's gift) |
| Jessamine, Jessamina | jasmine |
| Jewel, Jule | jewel |
| Joanna | God's gift |
| Jolie | beautiful |
| Josette, Josephine, Josepha, Josephe | feminine form of Joseph (He adds) |
| Joy | jewel/delight |
| Julie, Julia, Juliette, Juliet, Julietta, Julita | youthful |
| Julienne | feminine form of Julian (youthful) |
| Karla | strong |
| Karlotta, Karoline, Karolina | tiny and feminine |
| Karoly, Karcsi, Kari | joyful song |
| La Roux | red-haired |
| Laurel, Lauren, Laurene | Laurel |
| Laurette | little laurel |
| Laverna, Lavernia, La Verne, La Vergne | born in the spring |
| Leala, Lieala, Lealia | loyal |
| Leona, Leonie, Leone, Leonelle, Leonarda | lion |
| Liane, Liana | bond |
| Liriene, Lirienne | reads aloud |
| Logistilla, Logestilla | legend name |
| Lorraine, Loriane | from Lorraine |
| Lotye, Leyta, Letje | tiny and womanly |
| Lucille, Lucile | light |
| Lundy | born on Monday |
| Lynnette, Linette, Lyonette | little lion |