Monograptidae is an extinct family of graptolites of the order Graptoloidea.

[1] Monograptids have only one row of thecae per stipe (stem, branch), unlike the biserial graptolites which have two opposing rows of thecae per stipe.

[2] Fossils of Monograptidae are found from the Ordovician to the Devonian (age range: from 460.9 to 402.5 million years ago).

[2] They are known from various localities in Europe, North America, Argentina, China, Central Asia, Southeast Asia, Australia, Algeria and Morocco.

The family can possibly be divided into several subfamilies.