The article reviews the use of biopesticides derived from plants and algae as eco-friendly alternatives to conventional agrochemicals. It highlights the increasing global demand for sustainable agricultural practices to mitigate environmental pollution and climate change. The review covers the extraction of biopesticides from various plants and algae, their geographical distribution, target pests, mode of action, and commercial viability. Plants such as Anethum sowa, Thymus vulgaris, and Citrus spp. are noted for their essential oils with insecticidal properties. Algae, including red, brown, and green species, are also explored for their potential in producing biopesticides. The article discusses the mechanisms of action of biopesticides, which include physical and biological interactions with pests, and their effectiveness in controlling plant pathogens, insects, and nematodes. Additionally, the review examines the commercial applications of biopesticides, emphasizing their biodegradability and environmental benefits. The authors conclude that biopesticides offer a promising solution to conventional pesticides, aligning with the United Nations' sustainable development goals and contributing to global food security and environmental sustainability.The article reviews the use of biopesticides derived from plants and algae as eco-friendly alternatives to conventional agrochemicals. It highlights the increasing global demand for sustainable agricultural practices to mitigate environmental pollution and climate change. The review covers the extraction of biopesticides from various plants and algae, their geographical distribution, target pests, mode of action, and commercial viability. Plants such as Anethum sowa, Thymus vulgaris, and Citrus spp. are noted for their essential oils with insecticidal properties. Algae, including red, brown, and green species, are also explored for their potential in producing biopesticides. The article discusses the mechanisms of action of biopesticides, which include physical and biological interactions with pests, and their effectiveness in controlling plant pathogens, insects, and nematodes. Additionally, the review examines the commercial applications of biopesticides, emphasizing their biodegradability and environmental benefits. The authors conclude that biopesticides offer a promising solution to conventional pesticides, aligning with the United Nations' sustainable development goals and contributing to global food security and environmental sustainability.