"Brown Eyed Girl" is a song by Northern Irish singer-songwriter Van Morrison. Written and recorded in 1967 by Van Morrison and produced by Bang Records chief Bert Berns, it was first released in May 1967 on the album Blowin' Your Mind!. When released as a single, it rose to number eight on the Cashbox charts, and reached number ten on the Billboard Hot 100. It featured the Sweet Inspirations singing back-up vocals and is widely considered to be Van Morrison's signature song.

This song would prove to be the impetus for Morrison's career as a solo artist. It was to be his first single after leaving his position as lead singer for the Belfast formed Them and would lead to his relocation to the United States and an eventual contract with Warner Bros. Records, where he would record his career-defining album, Astral Weeks.

"Brown Eyed Girl" has remained a popular classic pop song that continues to be played regularly on many radio stations and is featured on the top ten list as one of the most played songs by DJs. It appeared at No. 4 on the top 200 in 2011. It has been covered by hundreds of bands over the years and has earned many awards for Morrison, most prominently when it was inducted into the Grammy Hall of Fame in 2007 and in 2003, when it was listed as one of the The 365 Top Selling Songs of the 20th Century by RIAA.

Eye color is a polygenic phenotypic character and is determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.

In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. The appearance of blue, green, as well as hazel eyes results from the Rayleigh scattering of light in the stroma, a phenomenon similar to that which accounts for the blueness of the sky. Neither blue nor green pigments are ever present in the human iris or ocular fluid. Eye color is thus an instance of structural color and varies depending on the lighting conditions, especially for lighter-colored eyes.

The brightly colored eyes of many bird species result from the presence of other pigments, such as pteridines, purines, and carotenoids. Humans and other animals have many phenotypic variations in eye color. The genetics of eye color are complicated, and color is determined by multiple genes. So far, as many as 15 different genes have been associated with eye color inheritance. Some of the eye-color genes include OCA2 and HERC2. The once-held view that blue eye color is a simple recessive trait has been shown to be incorrect. The genetics of eye color are so complex that almost any parent-child combination of eye colors can occur. However, OCA2 gene polymorphism, close to proximal 5′ regulatory region, explains most human eye-color variation.

Van Morrison, OBE (born George Ivan Morrison; 31 August 1945) is a Northern Irish singer-songwriter and musician. His live performances at their best are regarded as transcendental and inspired; while some of his recordings, such as the studio albums Astral Weeks and Moondance, and the live album It's Too Late to Stop Now, are widely viewed as among the greatest ever made.

Known as "Van the Man" to his fans, Morrison started his professional career when, as a teenager in the late 1950s, he played a variety of instruments including guitar, harmonica, keyboards and saxophone for various Irish showbands covering the popular hits of the day. He rose to prominence in the mid-1960s as the lead singer of the Northern Irish R&B band Them, with whom he recorded the garage band classic "Gloria". His solo career began under the pop-hit oriented guidance of Bert Berns with the release of the hit single "Brown Eyed Girl" in 1967. After Berns' death, Warner Bros. Records bought out his contract and allowed him three sessions to record Astral Weeks in 1968. Even though this album would gradually garner high praise, it was initially poorly received; however, the next one, Moondance, established Morrison as a major artist, and throughout the 1970s he built on his reputation with a series of critically acclaimed albums and live performances. Morrison continues to record and tour, producing albums and live performances that sell well and are generally warmly received, sometimes collaborating with other artists, such as Georgie Fame and The Chieftains. In 2008 he performed Astral Weeks live for the first time since 1968.