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This paper aims to study the relation between social capital and waste management and the effects of the former on the latter. The statistical population is all families residing in Amol. Among them, 445 people were selected based on the stratified sampling method. The results show that the highest level of disposal behavior refers to the metal waste and the lowest part pertains to the plastic bag of ice cream, chips, cheese puffies and so on. This is a very important finding and can be discussed more in later researches. The correlation coefficient of variables in social capital and waste management is positive. Owing to the fact that social capital makes a norm pressure on social participation, this positive coefficiency was hypothesized in advance. Besides, the more the social trust is among people, the better the waste management will be. In the other words, if people get reassured that all the society is waste managing, they will take part more in it as well.