| Name | Meaning | Gender | Origin |
|---|
| Jilly | Youth | Girl | |
| Jinny | Maiden, Virgin | Girl | |
| Jo | God shall add (a another son) | Unisex | |
| Joan | God is gracious | Girl | Medieval |
| Joandra | God is gracious | Girl | |
| Joann | God is gracious | Girl | |
| Joanna | God is gracious | Girl | |
| Joanne | God is gracious | Girl | French |
| Jobeth | God is gracious and God is my oath | Girl | |
| Jocasta | Violet Tinted Clouds | Girl | |
| Jocelin | Lion of God, Gaut | Unisex | |
| Joceline | Lion of God, Gaut | Unisex | |
| Jocelyn | Lion of God, Gaut | Unisex | |
| Jochebed | | Girl | Hebrew |
| Jocosa | Lady | Girl | |
| Jodene | God is Gracious, Jewess, Praised | Girl | |
| Jodi | God is Gracious, Jewess, Praised | Unisex | |
| Jodie | God is Gracious, Jewess, Praised | Girl | |
| Jody | God is Gracious, God shall add (a another son) | Unisex | |
| Joelle | Yahweh is God | Girl | |
| Joetta | God is gracious | Girl | |
| Johanna | God is gracious | Girl | |
| Johanne | God is gracious | Girl | |
| Johna | God is gracious | Girl | |
| Johnna | God is gracious | Girl | |
| Johnnie | God is gracious | Unisex | |
| Joi | Joy | Girl | |
| Joisse | Lady | Girl | |
| Jojo | God is Gracious, God shall add (a another son) | Unisex | |
| Joleen | Pretty | Girl | |
| Jolene | Pretty | Girl | |
| Jolie | Pretty | Girl | |
| Jonelle | God is gracious | Girl | |
| Jonette | God is gracious | Girl | |
| Joni | God is gracious | Girl | |
| Jonie | God is gracious | Girl | |
| Jonna | God is gracious | Girl | |
| Jonquil | Jonquil Flower | Girl | |
| Jools | Descended from Jupiter (Jove), Youth | Unisex | French |
| Jordan | Flowing down | Unisex | Greek |
| Jordana | Flowing down | Unisex | |
| Jordi | Flowing down | Girl | |
| Jordie | Flowing down | Girl | |
| Jordon | Flowing down | Unisex | |
| Jordyn | Flowing down | Girl | |
| Jorie | Pearl | Girl | |
| Jorja | Farm worker, Farmer | Girl | |
| Joscelin | Gaut | Girl | |
| Josceline | Gaut | Girl | |
| Joselyn | Gaut | Girl | |
| Josepha | God shall add (a another son) | Girl | |
| Josephine | God shall add (a another son) | Girl | French |
| Josette | God shall add (a another son) | Girl | French |
| Josie | God shall add (a another son) | Girl | |
| Joss | Gaut | Unisex | |
| Josslyn | Garnet (the gem), Gaut | Unisex | |
| Joy | Joy, Happiness, Joyful | Unisex | |
| Joyce | Lord | Girl | |
| Joye | Joy | Girl | |
| Juanita | God is gracious | Girl | Spanish |
| Judi | Jewess, Woman of Judea | Girl | |
| Judie | Jewess, Woman of Judea | Girl | |