The Icelandic alphabet consists of the following letters:

A � B (C) D � E � F G H I � J K L M N O � P (Q) R S T U � V (W) X Y � (Z) � � �

The modern Icelandic alphabet has developed from a standard established in the 19th century, by the Danish linguist Rasmus Rask primarily. It is ultimately based heavily on an orthographic standard created in the early 12th century by a mysterious document referred to as The First Grammatical Treatise, author unknown. The standard was intended for what its author perceived to be a common language of Scandinavia, alias Old Norse. It did not have much influence, however, at the time.

The most defining characteristics of the alphabet were established in the old treatise:

• Use of the acute accent (originally to signify vowel length).
• Use of �, borrowed from the Old English alphabet letter thorn, a language which the astute grammarian described as "more or less the same" as Old Norse.

The later Rasmus Rask standard was basically a re-enactment of the old treatise, with some changes to fit concurrent Germanic conventions, such as the exclusive use of k rather than c. Various old features, like �, had actually not seen much use in the later centuries, so Rask's standard constituted a major change in practice.

Later 20th century changes are most notably the adoption of �, which had previously been written as je (reflecting the modern pronunciation), and the abolition of z, which had long been a mere etymological detail.

Recently most people have begun pronouncing Y and I in the same way as well as � and �. As there is no difference in the pronunciation of those letters, they might be a candidate for future deprecation in the alphabet.

is:�slenska stafr�fi� pl:Alfabet islandzki zh-cn:冰岛语字母表