参旗六，即猎户座π（Pi Orionis、π Ori、π Orionis），是一颗位于猎户座的恒星，西方传统名称是 Tabit，佛兰斯蒂德命名法将该恒星命名为猎户座1（1 Orionis）。它的视星等是肉眼可见的3.16。参旗六是猎户座中代表狮皮（或盾牌）的恒星中最亮的。根据视差量测，它和地球的距离是26.32光年（8.07秒差距）。虽然在参旗六旁至今并未发现太阳系外行星，该恒星仍被部分天文学家认为它周围的特定位置允许体积和地球相当的行星存在。

Pi Orionis (π Ori, π Orionis) is the Bayer designation for a star in the equatorial constellation of Orion. It has the traditional name of Tabit and the Flamsteed designation 1 Orionis. At an apparent visual magnitude of 3.16, it is readily visible to the naked eye. Pi Orionis is the brightest star in the lion's hide (or shield) that Orion is holding. The distance to this star, as measured using the parallax technique, is 26.32 light-years (8.07 parsecs). Though no extrasolar planets have been observed around Pi Orionis, the star is considered a prime location for planets as small as the Earth.