There are plenty of female Spartans, as the UNSC did not make any distinction between gender when screening for their super soldiers. They needed all of the soldiers they could get. The best known female Spartans are Linda-058, Kelly-087, Grace-093, Lucy-B091, Catherine-B320, Holly-G003, Olivia-G???, and Jane-A???. THe last five Spartans are S-III, Olivia and Jane's tag number is unknown.