Gromwell may refer to plants in one of two closely related genera:
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Lithodora
''Lithodora'' is a genus of flowering plants in the family Boraginaceae, native to southwestern Europe, southern Greece, Turkey and Algeria. They are low-growing, evergreen shrubs and subshrubs, producing 5-lobed blue or white flowers. The Greek ...
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Lithospermum
''Lithospermum'' is a genus of plants belonging to the family Boraginaceae. The genus is distributed nearly worldwide, but most are native to the Americas and the center of diversity is in the southwestern United States and Mexico. Species are ...
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