Carbon nanotubes made smart: Single‐walled carbon nanotubes (SWNTs) bearing multiple highly hybridizable DNA sequences were prepared, and the hybridization‐driven aggregation and redispersion of the conjugates were realized (see picture). The DNA–SWNT conjugates could be used as building blocks for DNA‐programmed material self‐assembly and should be able to parallel or even outperform regularly employed systems.