In a color cathode ray tube, a panel (3) having a single faceplate (3-1) is coupled to a plurality of necks (5-1 to 5-12) through a plurality of funnels (4-1 to 4-12), respectively. A plurality of electron gun assemblies (6-1 to 6-12) are received in necks (5-1 to 5-12) and a plurality of deflection units (7-1 to 7-12) are mounted around the funnels (4-1 to 4-12), respectively. A screen (2) is formed on an inner surface of faceplate (3-1) and has a plurality of continuous segment regions (16-1 to 16-12) each of which is scanned with the electron beams emitted from the corresponding electron gun assembly (6-1 to 6-12) and deflected by the corresponding deflection unit (7-1 to 7-12). A shadow-mask (10) is so supported in the panel (3) as to face the faceplate (3-1). The electron gun assemblies (6-1 to 6-12) adjacent each other so arranged as to have a relative distance GS between the central axis thereof: where SG is a relative distance on the deflection plane, between the electron beams emitted from each of said electron gun assembly, d is a distance between predetermined effective apertures of the shadow mask through which the predetermined electron beams pass, the predetermined electron beams landing on endmost adjacent effective phosphor elements in each two adjacent ones of said segment regions, and m and n are integers, respectively.