nChildren's moral judgments of resource distributions as having "fair" or "unfair" origins play an important role in early social cognition. What factors shape these judgments? The present study advances research on this question in two primary ways: First, while prior work has typically assigned children to an advantaged or disadvantaged position in an experimental setting, here we also investigated how relative objective and "Subjective" Socioeconomic Status (OSS and SSS) predicted children's judgments. Second, while prior work has asked children to judge distributions with known origins, here we presented children with novel and causally ambiguous distributions, thereby simulating children's initial encounter of resource distributions in the social world. We assessed participants' (n = 113, 6- to 9-year-olds) OSS and SSS and then introduced them to a machine that distributed Skittles on an unknown basis. Participants received half as many, twice as many, or the same number of Skittles as a peer in three between-subjects conditions, and then rated the machine's fairness. Results revealed that children who rated their families as wealthier relative to their neighborhoods (higher SSS) rated the machine as more fair. However, children from families that were actually wealthier relative to their neighborhoods (higher OSS) were more likely to rate the disadvantage-giving machine as unfair. Together, results represent the first evidence that OSS and SSS shape children's moral judgments of resource distributions, consistent with evidence that these two forms of socioeconomic status have unique impacts on adults' judgments of inequality. Implications for moral and social development are discussed.