Linguine (lit. 'little tongues'), sometimes anglicized as linguini, is a type of pasta similar to fettuccine and trenette, distinguished by its elliptical rather than flat section. Around about 4 millimetres (5⁄32 in) in width, it is wider than spaghetti, but less wide than fettuccine. Linguine was traditionally served with sauces such as pesto, but others such as tomato or fish based sauces are popular as well.

Linguine originated in the city of Genoa and is based on more traditional pastas.

Linguine comes from the Latin word lingua, meaning 'tongue'. The modern language closest to Latin is Italian, and the Italian word linguine, plural of the feminine linguina, means 'little tongues'. A thinner version of linguine is called linguettine.

Linguine, a type of flattened spaghetti, was initially documented in the 1700s in Genoa, Italy, by Giulio Giacchero, an economist and writer. Giacchero, author of a book on the economy of Genoa in the 1700s, wrote about linguine served with green beans, potatoes, and a Genovese specialty—basil pesto. He claimed it was the typical festive dish of Ligurian families of the 1700s.

Liguria is the coastal region in far northwest Italy on the Ligurian Sea, dominated by the ancient port of Genoa. Basil pesto is a traditional dish there, and is typically served over linguine.

In the United States, National Linguine Day occurs on 15 September every year.

The production of linguine involves mixing semolina flour or durum flour and water to form a dough, which is then rolled out and cut into flat strands. This elongated shape is the primary way linguine and spaghetti are distinguished, the latter being round. Before the proliferation of modern production techniques, pasta-making was a labor-intensive process carried out by hand.

Wheat can also be ground into whole-wheat flour, then kneaded with water to make whole grain linguine.