An aircraft passenger seat , comprising: a base and a backrest extending from the base , the backrest having a backrest frame ; and a headrest , comprising: a displacement member mounted to the backrest frame , a lower end of the displacement member being positioned in front of the backrest frame and above the base , the displacement member being displaceable relative to the backrest frame to adjust a height of the headrest with respect to the backrest frame ; and a tilt member extending between a pivot end pivotably mounted to the displacement member at a joint , and a head support end disposed above the pivot end to support a rear portion of a head of an occupant of the seat , the joint defining a pivot axis and being positioned in front of the backrest frame and above the base , the tilt member being pivotable about the pivot axis to displace the head support end toward and away from the displacement member ; wherein the displacement member has a front portion with an upright segment positioned in front of the backrest frame and above the base , the upright segment being connected to the tilt member at the joint and extending upward therefrom to a transverse segment extending transversely to the upright segment . a base and a backrest extending from the base , the backrest having a backrest frame ; and a headrest , comprising: a displacement member mounted to the backrest frame , a lower end of the displacement member being positioned in front of the backrest frame and above the base , the displacement member being displaceable relative to the backrest frame to adjust a height of the headrest with respect to the backrest frame ; and a tilt member extending between a pivot end pivotably mounted to the displacement member at a joint , and a head support end disposed above the pivot end to support a rear portion of a head of an occupant of the seat , the joint defining a pivot axis and being positioned in front of the backrest frame and above the base , the tilt member being pivotable about the pivot axis to displace the head support end toward and away from the displacement member ; wherein the displacement member has a front portion with an upright segment positioned in front of the backrest frame and above the base , the upright segment being connected to the tilt member at the joint and extending upward therefrom to a transverse segment extending transversely to the upright segment . a displacement member mounted to the backrest frame , a lower end of the displacement member being positioned in front of the backrest frame and above the base , the displacement member being displaceable relative to the backrest frame to adjust a height of the headrest with respect to the backrest frame ; and a tilt member extending between a pivot end pivotably mounted to the displacement member at a joint , and a head support end disposed above the pivot end to support a rear portion of a head of an occupant of the seat , the joint defining a pivot axis and being positioned in front of the backrest frame and above the base , the tilt member being pivotable about the pivot axis to displace the head support end toward and away from the displacement member ; wherein the displacement member has a front portion with an upright segment positioned in front of the backrest frame and above the base , the upright segment being connected to the tilt member at the joint and extending upward therefrom to a transverse segment extending transversely to the upright segment . <EOS>