Abstract: Background and Objective: Malaria is a mosquito-caused disease that poses huge problems in the world. The use of synthetic insecticides has several harmful consequences including environmental pollution, poisoning of humans and ineffectiveness due to mosquito resistance. Therefore, the use of essential oils as biological insecticides may be a friendly alternative route. Materials and Methods: Eleven aromatic plant materials were used. Essential oils were obtained by hydrodistillation. The study of toxicity against Anopheles gambiae’s eggs was carried out after 72 hrs of exposure and the percentage of egg mortality was determined as well as the calculation of LC50. Results: The obtained results showed that the highest ovicidal activity was demonstrated by the essential oils of Chenopodium ambrosioides, Cymbopogon citratus and Aframomum stipulatum (LC50 = 0.040 g L–1) followed by Zingiber officinale (LC50 = 0.043 g L–1). Conclusion: The findings of this research study revealed the toxicity of eleven essential oils against Anopheles gambiae’s eggs, a malaria vector agent. Furthermore, these confirm the practice of traditional African medicine and pharmacopoeia. Thus, essential oils can be a source of natural insecticides.