タイム (thyme) はシソ科イブキジャコウソウ属 (Thymus) の植物の総称で、およそ350種を数える。芳香を持つ多年生植物で、丈が低く草本にみえるが、茎が木化する木本である。
樹高40センチメートルほどの小低木で、ハーブの一種として知られる。原産はヨーロッパ、北アフリカ、アジアである。多くの種がケモタイプを持つ。日本ではタチジャコウソウ（コモンタイム、T. vulgaris）のことを一般にタイムと呼ぶことが多い。数ある品種の中でも、コモンタイム、シトラスタイム（レモンタイム）、ワイルドタイム(ヨウシュイブキジャコウソウ)が代表的な品種である。
The genus Thymus ( thymes) contains about 350 species of aromatic perennial herbaceous plants and subshrubs to 40 cm tall in the family Lamiaceae, native to temperate regions in Europe, North Africa and Asia.
Stems tend to be narrow or even wiry; leaves are evergreen in most species, arranged in opposite pairs, oval, entire, and small, 4-20 mm long, and usually aromatic. Thyme Flowers are in dense terminal heads, with an uneven calyx, with the upper lip three-lobed, yellow, white or purple.
Several members of the genus are cultivated as culinary herbs or ornamentals, when they are also called thyme after its best-known species, Thymus vulgaris or common thyme.
Thyme is best cultivated in a hot, sunny location with well-drained soil. It is generally planted in the spring, and thereafter grows as a perennial. It can be propagated by seed, cuttings, or dividing rooted sections of the plant. It tolerates drought well. The plants can take deep freezes and are found growing wild on mountain highlands. Along the Italian Riviera, it is found from sea level up to 800 m