Yo (Ё ё; italics: Ё ё) is a letter of the Cyrillic script. In Unicode, the letter ⟨Ё⟩ is named CYRILLIC CAPITAL/SMALL LETTER IO.

It commonly represents the sounds /jo/, like the pronunciation of ⟨Yo⟩ in "York".

Yo is romanized using the Latin letters ⟨yo⟩.

Yo was first used in Russian, where its status is now ambiguous.

Yo occurs as a discrete letter in the Cyrillic alphabets of Belarusian, Rusyn, Mongolian and many Caucasian and Turkic languages.

The letter Yo is the seventh letter of the alphabet, but although it indicates a distinct sound from Ye, it is treated as the same letter for purposes of alphabetisation and sorting. Thus in the dictionary, ёж comes after едок and before ездить. It is usually printed as ⟨е⟩.

The letter ⟨ё⟩ indicates the phoneme /o/ following a palatalized consonant (or occasionally after ⟨ж⟩, ⟨ч⟩, ⟨ш⟩, or ⟨щ⟩) in a stressed syllable. In initial or post-vocalic position, it represents /jo/, also exclusively under stress.

In modern Russian, the reflex of Common Slavonic /e/ under stress and following a palatalized consonant but not preceding a palatalized consonant is /o/. (Compare, for example, Russian моё moyo ("my" neuter nominative and accusative singular) and Polish/Czech/Slovak/Serbo-Croatian/Slovenian moje.) However, since this sound change took place after the introduction of writing, the letter ⟨е⟩ continued to be written in this position. It was not until the 18th century that efforts were made to represent the sound in writing.

The Cyrillic script ( /sɨˈrɪlɪk/) or azbuka is an alphabetic writing system developed in the First Bulgarian Empire during the 10th century AD at the Preslav Literary School. It is the basis of alphabets used in various languages, past and present, in Eastern Europe and Asia, especially those of Slavic origin, and non-Slavic languages influenced by Russian. As of 2011 around 252 million people in Europe and Asia use it as official alphabet for their national languages. About half of them are in Russia.

Cyrillic is derived from the Greek uncial script, augmented by ligatures and consonants from the older Glagolitic alphabet and Old Bulgarian for sounds not found in Ancient Greek. It is named in honor of the two Eastern Roman Empire brothers, Saints Cyril and Methodius, who created the Glagolitic alphabet earlier on. Modern scholars believe that Cyrillic was developed and formalized by early disciples of Cyril and Methodius (such as Clement of Ohrid).

With the accession of Bulgaria to the European Union on 1 January 2007, Cyrillic became the third official script of the European Union, following the Latin and Greek scripts.

Julio Iglesias (born Julio José Iglesias de la Cueva; September 23, 1943) is a Spanish singer and songwriter whose romantic image, magnetic stage presence, and expressive music made him one of the best-selling artists of all time. By the early 21st century he had sold hundreds of millions of albums in more than a dozen languages. He has sold over 300 million records worldwide in 14 languages and released 77 albums. According to Sony Music Entertainment, he is one of the top 15 best-selling music artists in history. While Iglesias rose to international prominence in the 1970s and 1980s as a performer of romantic ballads, his success has continued on as he entered new musical endeavors. He is the father of singer Enrique Iglesias.

Iglesias was born in Madrid, the eldest son of Dr. Julio Iglesias Puga and María del Rosario de la Cueva y Perignat. Iglesias' father's family was from Galicia, and Iglesias' mother an Andalusian.

In the 1960s, he studied law in Madrid and was a goalkeeper for one of Real Madrid's football teams. On September 22, 1963, he was involved in a car crash, resulting in an injury to his spinal cord. He said, "I had a car accident; [a] very, very strange car accident...I lost control of the car and rolled it, resulting in what they call 'paraparexia,' which is not paraplegia. It's a compression in the [spinal] cord, in the sense of the neck...my spinal cord; and I was very, very ill for three years."  His doctors thought he would never walk again; indeed, his legs were left permanently weakened, and they continued to require therapy as of late October 2010. However, slowly, he began recovering his health. To develop and increase the dexterity of his hands, he began playing guitar. When he recovered from his accident, he resumed academic studies and traveled to the United Kingdom to study the English language, first in Ramsgate, then at Bell Educational Trust's Language School in Cambridge.