Systems and methods for a reconfigurable order-constrained switch network are provided. In certain implementations, a reconfigurable switch network comprises a plurality of subtrees, wherein a subtree comprises a plurality of ports coupled to a single port, wherein a signal that passes through the single port is directed to a port in the plurality of ports as directed by at least one circulator, wherein at least two subtrees in the plurality of subtrees have a different number of ports in the respective plurality of ports, wherein the plurality of subtrees are combined such that at least one of the plurality of ports from each subtree is shared.