Constellation is a line of watches from Omega, originally their top dress watch line and equipped with a chronometer-grade movement.

Omega had produced high-end dress watches for decades, but the 1948 Century chronometer was a true achievement for the company. Celebrating Omega's 100th anniversary, the Century sported a bumper automatic movement with chronometer precision. Although not intended for serious production, the Century caught on with Omega fans and the company set about creating a full-production model.

The Constellation was introduced in 1952 to follow the Century and capitalize on Omega's chronometer movements, which set records in Geneva in 1951. The eight stars on the dial represented Omega's chronometer achievements in the last 20 years, including a “sweep” of every category in 1931.

In the United States, a trademark dispute caused Omega to sell the Constellation line under the Globemaster name until 1956. Many of these watches have just the stars on the dial rather than the Constellation name. Later, a lower line of Omega Globemasters was introduced in the United States.

In the 1950's, Omega developed different standards of finish for the Constellation line

• The base Constellation was available in steel or gold
• The Constellation Deluxe was only available in gold and came with applied gold indexes on the dial
• The Constellation Grand Luxe was available in gold or platinum and included a “brick link” bracelet and solid silver presentation box

The Constellation Calendar was introduced in 1958, featuring a new movement with a date function. The so-called “C-case” Constellation was introduced in 1964, featuring a case resembling interlocking C's. A ladies' Constellation followed in 1967.

The late 1960's and 1970's saw a diversification of the Constellation line, with square cases, an “Integral” line with a integrated bracelet and case, and many others. Quartz Constellation models followed in the 1970's as well, including a Marine Chronometer version which remains the only watch ever to be certified as a marine chronometer.

In 1982, Omega introduced the Constellation “Manhattan” with its signature “griffes” or claws on the bezel. These originally helped to keep the crystal in place but became a famous design element that remains associated with the Constellation to this day.

• Omega-Uhren. Kaleidoskop einer bekannten Swiss Marke; Author Anton Kreuzer; ISBN 3853783546
• Omega-Modelle; Author Anton Kreuzer; ISBN 3853784186
• Das ZEITGEFÜHL-Uhrenbuch; Author Gerd-Lothar Reschke; ISBN 3-938607-61-0