A connection terminal (1, 2) configured to be accommodated within a casing of a connector, comprising: a terminal fitting (10; 110); an insulating covering member (20; 120) attachable to and detachable from the terminal fitting (10; 110) from one end in a virtual axis direction of the terminal fitting (10; 110) along the virtual axis direction; and a locking structure (30; 130) provided between the terminal fitting (10; 110) and the covering member (20; 120) and configured to detachably lock the covering member (20; 120) to the terminal fitting (10; 110), wherein the terminal fitting (10; 110) includes an electrical connection portion (11; 111) which is formed in a rectangular plate shape and includes two flat surfaces (11a, 11b; 111a, 111b) along the virtual axis direction, at least one of the two flat surfaces (11a, 11b; 111a, 111b) being configured to be used as a contact portion with a mating connection terminal, the covering member (20; 120) includes two covering portions (21, 22; 121, 122) configured to sandwich and cover, in an orthogonal direction orthogonal to the virtual axis direction, covering target portions (13; 113) of the electrical connection portion (11; 111), the covering target portions (13; 113) are disposed at opposite ends in the orthogonal direction, are each end surfaces (11c, 11d; 111c, 111d) on two sides of the electrical connection portion (11; 111) along the virtual axis direction, and are areas possible of being finger-touch prevention targets to be prevented from being touched by a finger when the connection terminal (1, 2) is accommodated within the casing of the connector, and the connection terminal (1, 2) is electrically connected to the mating connection terminal, the locking structure (30; 130) includes, for each of combinations of the covering target portions (13; 113) and the covering portions (21, 22; 121, 122) arranged opposite to each other in the orthogonal direction, a locking protrusion (31; 131) provided in one of the covering target portion (13; 113) and the covering portion (21, 22; 121, 122), and a locking groove (32; 132) provided in the other of the covering target portion (13; 133) and the covering portion (21, 22; 121, 122) and configured to lock the locking protrusion (31; 131) in the virtual axis direction when the locking protrusion (31; 131) is inserted thereinto, and each of the covering portions (21, 22; 121, 122) has such flexibility as to enable elastic deformation along a lock release direction for releasing a lock state between the locking protrusion (31; 131) and the locking groove (32; 132) for the covering portion (21, 22; 121, 122). a terminal fitting (10; 110); an insulating covering member (20; 120) attachable to and detachable from the terminal fitting (10; 110) from one end in a virtual axis direction of the terminal fitting (10; 110) along the virtual axis direction; and a locking structure (30; 130) provided between the terminal fitting (10; 110) and the covering member (20; 120) and configured to detachably lock the covering member (20; 120) to the terminal fitting (10; 110), wherein the terminal fitting (10; 110) includes an electrical connection portion (11; 111) which is formed in a rectangular plate shape and includes two flat surfaces (11a, 11b; 111a, 111b) along the virtual axis direction, at least one of the two flat surfaces (11a, 11b; 111a, 111b) being configured to be used as a contact portion with a mating connection terminal, the covering member (20; 120) includes two covering portions (21, 22; 121, 122) configured to sandwich and cover, in an orthogonal direction orthogonal to the virtual axis direction, covering target portions (13; 113) of the electrical connection portion (11; 111), the covering target portions (13; 113) are disposed at opposite ends in the orthogonal direction, are each end surfaces (11c, 11d; 111c, 111d) on two sides of the electrical connection portion (11; 111) along the virtual axis direction, and are areas possible of being finger-touch prevention targets to be prevented from being touched by a finger when the connection terminal (1, 2) is accommodated within the casing of the connector, and the connection terminal (1, 2) is electrically connected to the mating connection terminal, the locking structure (30; 130) includes, for each of combinations of the covering target portions (13; 113) and the covering portions (21, 22; 121, 122) arranged opposite to each other in the orthogonal direction, a locking protrusion (31; 131) provided in one of the covering target portion (13; 113) and the covering portion (21, 22; 121, 122), and a locking groove (32; 132) provided in the other of the covering target portion (13; 133) and the covering portion (21, 22; 121, 122) and configured to lock the locking protrusion (31; 131) in the virtual axis direction when the locking protrusion (31; 131) is inserted thereinto, and each of the covering portions (21, 22; 121, 122) has such flexibility as to enable elastic deformation along a lock release direction for releasing a lock state between the locking protrusion (31; 131) and the locking groove (32; 132) for the covering portion (21, 22; 121, 122).