Mokslas skaitymo rašto lietuviško (Old Lithuanian: Moksłas skaityma raszta lietuwiszka; English: The Science of Reading the Lithuanian Writing) is the first Catholic primer of the Lithuanian language.

[1][2][3] The first Lithuanian primer Mokslas skaitymo rašto lenkiško (Old Lithuanian: Moksłas skaytima raszto lękiszko; English: The Science of Reading the Polish Writing) was published in 1759–1761, however later it was published with a name Mokslas skaitymo rašto lietuviško (Old Lithuanian: Moksłas skaityma raszta lietuwiszka; English: The Science of Reading the Lithuanian Writing).

[1][2] In 1776–1790, about 1,000 copies of the primer were issued annually, in total – over 15,000 copies.

[1][2] This primer was published until 1864 and was the most important factor in educating the mass audience of readers of the Lithuanian literature.

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