| Justicia alsophila Standl. & Leonard, 1947 |
| Justicia americana (L.) Vahl, 1791 |
| Justicia amplifolia T.F. Daniel, 2019 |
| Justicia anagallis (Mart. ex Nees) Lindau, 1895 |
| Justicia angustibracteata Leonard, 1938 |
| Justicia angustiflora D.N. Gibson, 1972 |
| Justicia ardens T.F. Daniel, 2002 |
| Justicia assurgens L., 1759 |
| Justicia atramentaria Benth., 1840 |
| Justicia aurea Schltdl., 1832 |
| Justicia aurea (Rose) Lindau, 1897 |
| Justicia austrocapensis T.F. Daniel, 1997 |
| Justicia bartlettii (Leonard) D.N. Gibson, 1972 |
| Justicia borrerae (Hemsl.) T.F. Daniel, 1995 |
| Justicia brandegeeana Wassh. & L.B. Sm., 1969 |
| Justicia breedlovei T.F. Daniel, 1995 |
| Justicia breviflora (Nees) Rusby, 1900 |
| Justicia californica (Benth.) D.N. Gibson, 1972 |
| Justicia callistachya Schltdl. & Cham., 1831 |
| Justicia campechiana Standl. ex Lundell, 1934 |