Abstract: This study aims to find the benefits of household liquid organic waste as plant fertilizer. Liquid organic waste fertilizer is made using banana peel, rice washing water, onion skin, and egg shells. Banana peel (100 g), onion skin (50 g), and egg shells (5 shells) are finely chopped and then soaked in rice washing water (500 ml). The mixture is used to fertilize tomato seedlings in polybags containing 1 kg of soil. The results showed that fertilization carried out once in 5 days increased tomato growth parameters, but did not affect chlorophyll levels. Thus, it can be concluded that liquid organic waste fertilizer from banana peel, rice washing water, onion skin, and egg shells has the potential to be used as tomato plant fertilizer.