A wing arrangement for an aircraft comprising: - a wing having a base section and a tip section, the base section having a first end portion and a second end portion, the tip section having a third end portion and a fourth end portion, wherein the first end portion is adapted to be coupled to the fuselage of the aircraft, wherein the second end portion and the third end portion are coupled with each other by a coupling arrangement such that the tip section is pivotable with respect to the base section about a pivot axis between a stowed position and a deployed position, the spanwise length of the wing between the first end portion and the fourth end portion being larger in the deployed position than in the stowed position, wherein the coupling arrangement comprises an annular outer part and an annular inner part, - wherein one of the annular outer part and the annular inner part is fixedly coupled to the second end portion and the other of the annular outer part and the annular inner part is fixedly coupled to the third end portion, - wherein the annular outer part extends in a plane perpendicular to the pivot axis and at least partially surrounds a receiving space, the annular inner part being at least partially received in the receiving space, wherein the annular inner part at least partially surrounds an actuator space, wherein the annular outer part and the annular inner part are configured such that the annular inner part is guided by the annular outer part inside the receiving space for the pivot movement about the pivot axis between the deployed and stowed positions, wherein the coupling arrangement further comprises an actuator received in the actuator space and having a base member and an output member which is pivotably mounted on the base member, wherein the base member is fixedly coupled to the second end portion and the output member is fixedly coupled to the third end portion so that the output member may pivot with respect to the base member about the pivot axis, wherein the actuator comprises drive means coupled to the base member and the output member and being adapted such that when the drive means are actuated a pivotal movement of the output member relative to the base member about the pivot axis is effected. - a wing having a base section and a tip section, the base section having a first end portion and a second end portion, the tip section having a third end portion and a fourth end portion, wherein the first end portion is adapted to be coupled to the fuselage of the aircraft, wherein the second end portion and the third end portion are coupled with each other by a coupling arrangement such that the tip section is pivotable with respect to the base section about a pivot axis between a stowed position and a deployed position, the spanwise length of the wing between the first end portion and the fourth end portion being larger in the deployed position than in the stowed position, wherein the coupling arrangement comprises an annular outer part and an annular inner part, - wherein one of the annular outer part and the annular inner part is fixedly coupled to the second end portion and the other of the annular outer part and the annular inner part is fixedly coupled to the third end portion, - wherein the annular outer part extends in a plane perpendicular to the pivot axis and at least partially surrounds a receiving space, the annular inner part being at least partially received in the receiving space, wherein the annular inner part at least partially surrounds an actuator space, wherein the annular outer part and the annular inner part are configured such that the annular inner part is guided by the annular outer part inside the receiving space for the pivot movement about the pivot axis between the deployed and stowed positions, wherein the coupling arrangement further comprises an actuator received in the actuator space and having a base member and an output member which is pivotably mounted on the base member, wherein the base member is fixedly coupled to the second end portion and the output member is fixedly coupled to the third end portion so that the output member may pivot with respect to the base member about the pivot axis, wherein the actuator comprises drive means coupled to the base member and the output member and being adapted such that when the drive means are actuated a pivotal movement of the output member relative to the base member about the pivot axis is effected.