| Justicia sonorae Wassh., 1981 |
| Justicia spathulata (Nees) Klotzsch, 1847 |
| Justicia spicigera Schltdl., 1832 |
| Justicia stellata (B.L. Rob. & Greenm.) T.F. Daniel, 2002 |
| Justicia strobiloglossa V.A.W. Graham, 1988 |
| Justicia superba hort. ex Nees, 1847 |
| Justicia tabascina T.F. Daniel, 1990 |
| Justicia teletheca T.F. Daniel, 1995 |
| Justicia tenera (Turrill) D.N. Gibson, 1972 |
| Justicia tianguensis T.F. Daniel, 1995 |
| Justicia tinctoriella Bennett Raizada, 1983 |
| Justicia torresii T.F. Daniel, 1993 |
| Justicia tuerckheimiana Donn. Sm., 1909 |
| Justicia turipachensis T.F. Daniel, 1995 |
| Justicia turneri Hilsenb., 1990 |
| Justicia tuxtlensis T.F. Daniel, 2002 |
| Justicia umbrosa (Nees) Lindau, 1894 |
| Justicia uxpanapensis T.F. Daniel, 2002 |
| Justicia valvata T.F. Daniel, 1993 |
| Justicia veracruzana T.F. Daniel, 2002 |