Methods, systems, and devices for dynamic channel mapping for a memory system are described. In one example, the memory system may include a memory device having a first set of pins that are associated with a channel, and a host device, coupled with the memory device, having a second set of pins that are associated with the channel. The host device may include a controller configured to receive signaling from the memory device for a channel mapping operation, determine a channel mapping (e.g., a mapping of pins, a mapping between pins of the channel and information positions of the channel) based at least in part on the received signaling, and communicate information with the memory device via the channel based at least in part on the determined channel mapping.