拉格（英文：Raga, 亦称作 raag, raaga, ragam)，简单来说是印度古典音乐旋律所用的调式，但这个字直译为「色彩」、「色相」，亦可以解作「美」、「旋律」。

拉格由四个或以上的音高组成，而利用拉格可以构成不同的旋律。但拉格不仅是调式，也同时也决定每个音是怎样演绎，每个拉格有独特的感情和气氛。传统上，拉格会在特定的季节和时间演奏。而除了北印度古典音乐和南印度古典音乐，印度的电影及流行音乐亦常常会应用拉格。

鹿特丹音乐学院的学者 Joep Bor 将拉格形容为「有调性的框架，用以作曲及即兴演奏」。美国加州大学洛杉矶分校的民族音乐学者 Nazir Jairazbhoy 认为拉格的特性是：音阶、上行和下行的走势、省略的音、强调的音和音区、每个音的音准(是否略高或略低)以及装饰的手法。

A raga or raag (literally "color, hue" but also "beauty, melody"; also spelled raaga, ragam; pronounced rāga, or rāgam or "raag") is one of the melodic modes used in traditional South Asian music genres such as Indian classical music and qawwali.

A raga uses a series of five to nine musical notes upon which a melody is constructed. However, the way the notes are approached and rendered in musical phrases and the mood they convey are more important in defining a raga than the notes themselves. In the Indian musical tradition, rāgas are associated with different times of the day, or with seasons. Indian classical music is always set in a rāga. Non-classical music such as popular Indian film songs and ghazals sometimes use rāgas in their compositions.