Most letters in the Bulgarian alphabet stand for just one specific sound.

The various romanization systems differ with respect to 12 out of the 30 letters of the modern Bulgarian alphabet.

In 1947 the letter was removed from the Bulgarian alphabet and the spelling was changed to conform to the Eastern pronunciation.

The following table gives the letters of the Bulgarian alphabet, along with the IPA values for the sound of each letter:

It is named after the creators of the Bulgarian alphabet St. Cyril and St. Methodius.

The Bulgarian alphabet, in Cyrillic script, was invented by the Bulgarian scholar Clement of Ohrid in 885.

Boris I allowed the members of the Eastern clergy to enter his country in 864, and the Bulgarian Orthodox Church adopted the Bulgarian alphabet in 893.

In a short time, they managed create the Bulgarian Alphabet and to instruct several thousand future Bulgarian clergymen in the rites using the newly created Bulgarian language.

The Macedonian language had previously been written using the Early Cyrillic alphabet and later using Cyrillic with local adaptations from either the Serbian or Bulgarian alphabets.

Some Bulgarian intellectuals, notably Stefan Tsanev, have expressed concern over this, and have suggested that the Cyrillic script be called the "Bulgarian alphabet" instead, for the sake of historical accuracy.

The Bulgarian alphabet was introduced in the late 9th century, and numerous Bulgarian missionaries introduced the Bulgarian script to Serbs, Russians, Vlachs and the rest of Eastern European peoples.

In summer 2010, Parvanov reached his platform АБВ (ABV) the name constructed by the first three letters in Bulgarian alphabet which he claimed was not a political party neither a preparation for registering such.

Although no official reason was provided, several reasons are supposed for the rejection of the first committee's recommendation, including internal disagreement over the inclusion of Ъ (the Big Yer, as used in Bulgarian), and the view that its inclusion made the alphabet "too close" to the Bulgarian alphabet.

The Streamlined System for the Romanization of Bulgarian is a system of transliteration of the Bulgarian alphabet created in the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences in 1995, which is defined by the following table:

Through the efforts of two local missionaries, Saint Cyril and Saint Methodius, the Bulgarian alphabet came into being in Bulgaria's capital Preslav and a vernacular dialect, now known as Old Bulgarian or Old Church Slavonic, was established as a language of books and liturgy.

According to McNeish (p. 369),"... he liked to say that his achievement was that he "added a letter to the Bulgarian alphabet", but his monument is the great edition of The Paston Letters - a text throwing light on the attitudes of a 15th century English family in Norfolk on the make."