The 19 first names begin with Ja

• Jack (3)
• Jack Peter (1)
• Jack Royden (1)
• Jacqueline Ann (1)
• Jacqueline Mary (1)
• Jacques (1)
• James (2)
• James Andrew (1)
• James Andrew Robert (1)
• James Monroe (1)
• James William (1)
• Jamie George (1)
• Jane (1)
• Jane Marion (1)
• Janet (1)
• Janet Clara (1)
• Janey (1)
• Janey Elisabeth (1)
• Jason David (1)