Medicinal plants have a vital role in our life, providing us with a variety of secondary metabolites with varied chemical structures and biological activities. Ammi visnaga (L.) Lam. and Apium graveolens L. are common traditional plant species that have long been used for the prevention and treatment of several health problems. Both A. visnaga and A. graveolens belong to the carrot family, Apiaceae or Umbelliferae and showed different groups of natural compounds, such as coumarins, furanochromones, flavonoids and essential oils. In view of that, the current review describes various classes of chemical constituents identified so far from these medicinal species, together with their valued pharmacological and therapeutic effects.