 
The United States has very few laws governing given names. This freedom has given rise to a wide variety of names and naming trends. Naming traditions play a role in the cohesion and communication within American cultures. Cultural diversity in the U.S. has led to great variations in names and naming traditions and names have been used to express creativity, personality, cultural identity, and values.
A person's middle name often may be a first name from someone else in the person's family.
Naming laws.
Traditionally, the right to name one's child or oneself as one chooses has been upheld by court rulings and is rooted in the Due Process Clause of the fourteenth Amendment and the Free Speech Clause of the First Amendment, but a few restrictions do exist. Restrictions vary by state, but most are for the sake of practicality. For example, several states limit the number of characters that can be used due to the limitations of the software used for official record keeping. For similar reasons, some states ban the use of numerical digits or pictograms. A few states ban the use of obscenity. There are also a few states, Kentucky for instance, that have no naming laws whatsoever.
Despite the freedom that Americans have regarding names, controversies do exist. In 2013, Tennessee judge Lu Ann Ballew ruled that a baby boy named "Messiah" must change his name to "Martin" stating "it's a title that has only been earned by one person ... Jesus Christ." The decision was overturned in chancery court a month later and the child retained his birth name. Ballew was fired and a disciplinary hearing was scheduled on the basis that the name change order violated Tennessee's code of Judicial Conduct. No laws exist banning the use of religious names and judges are required to perform their duties without regard to religious bias.
Names with diacritics or non-English letters.
One naming law that some find restrictive is California's ban on diacritics such as in "José", a common Spanish name. The Office of Vital Records in California requires that names contain only the 26 alphabetical characters of the English language, plus hyphens and apostrophes.
Some states (for example, Alaska, Hawaii, Kansas, North Carolina, Oregon) allow diacritics and some non-English letters in birth certificates and other documents. There can be problems for persons with such names when moving to a state where such characters are banned and they have to renew their documents.
There is no law restricting the use of diacritics informally and many parents get around the restrictions by doing so.
Some city names contain diacritics, even in US states that forbid diacritics in people's legal names (see List of U.S. cities with diacritics).
Foreigners whose last name contains diacritics or non-English letters (e.g. Muñoz, Gößmann) may experience problems, since their names in their passports and in other documents are spelled differently (e.g., the German name Gößmann may be alternatively spelled Goessmann or Gossmann), so people not familiar with the foreign orthography may doubt the authenticity of the ID.
Names with symbols and capital letters in a non-initial position.
In many U.S. states, hyphens and apostrophe are the only two symbols personal names can officially contain. In some computer systems and in the machine-readable zone of a passport, they are omitted. (Mary-Kate O'Neill → Mary Kate ONeill)
Some names are spelled with a capital letter in the middle (LeVar Burton, Richard McMillan). In the machine-readable zone of a passport, the name is spelled only in capitals (LEVAR, MCMILLAN).
African-American names.
Many African Americans use their own or their children's names as a symbol of solidarity within their culture. Prior to the 1950s and 1960s, most African-American names closely resembled those used within European American culture. With the rise of the civil rights movement, there was a dramatic rise in names of various origins. One very notable influence on African-American names are Arabic names that entered the popular culture with the rise of The Nation of Islam Politico-Religious Movement among African Americans with its focus on civil rights. These popular names such as "Aisha" and other Arabic names such as Jamal and Malik are now also commonly used by African Americans regardless of religion.
Many names of French origin entered usage at this time as well. Historically French names such as Monique, Chantal, André, and Antoine became common within African-American culture. Names of African origin began to crop up as well. Names like Ashanti, Tanisha, Aaliyah, and Malaika have origins in the continent of Africa.
By the 1970s and 1980s, it had become common within the culture to invent new names, although many of the invented names took elements from popular existing names. Prefixes such as La/Le, Da/De, Ra/Re, or Ja/Je and suffixes such as -ique/iqua, -isha, and -aun/-awn are common, as well as inventive spellings for common names. The name LaKeisha is typically considered American in origin, but has elements pulled from both French and African roots. Other names like LaTanisha, JaMarcus, DeAndre, and Shaniqua were created in the same way. Punctuation marks are seen more often within African-American names than other American names, such as the names Mo'nique and D'Andre.
Even with the rise of creative names, it is also common for African Americans to use biblical names such as Daniel, Michael, David, James, Joseph, and Matthew as well as European names like Christopher. These names were among the most common names for African-American boys in 2013.
Rather uncommonly or unconventionally, some non-African Americans have given names that are usually perceived or seen as typically carried by their black compatriots.
Hispanic and Latino names.
Some individuals who are Hispanic or Latino American follow the naming conventions of Hispanic countries, which means having one surname from a mother (on her father's side) and one from the father (on his father's side), with the father's first. An "y" may be added between the two surnames. Some Hispanic or Latino women who marry either do not alter their surnames, or they add a "de" and paternal surnames on their husband's side.
Surnames as given names.
Using surnames as a first name is increasingly popular in the United States, although the origin of this practice is unclear. In one of her books about Southern culture, Marlyn Schwartz reports that it has long been common for southern families to use family surnames as first names. "The Baby Name Wizard" author Laura Wattenberg explains that the practice became popular in the early 20th century as poor immigrants chose names they associated with the sophistication of English aristocracy and literature, many of them surnames.
Regardless of origins, many names that are now considered first names in the U.S. have origins as surnames. Names like Riley, Parker, Cooper, Madison, Morgan, Cameron, and Harper originated as surnames. Names that originate as surnames typically start out their lifespan as androgynous names before developing a common usage as either a masculine name or a feminine name. Tyler and Taylor had approximately the same usage for both boys and girls when they came onto the charts before diverging. Tyler is now typically given to boys while Taylor is more often given to girls.
Names inspired by popular culture.
Without laws governing name usage, many American names pop up following the name's usage in movies, television, or in the media. Children may be named after their parents' favorite fictional characters.
Samantha was a rare name in the United States until the 1870s, after the publication of a novel series by Marietta Holley with Samantha as main character. The name became popular again in the 1960s, as the comedy television show "Bewitched" had a lead character named Samantha.
Prior to the 1984 movie "Splash", Madison was almost solely heard as a surname, with occasional usage as a masculine name. The name entered the top 1000 list for girls in 1985 and has been a top 10 name since 1997.
In 2014, the name Arya, the name of a character on the popular series "Game of Thrones", saw a dramatic rise to the 216th most popular girls name.
Names in popular culture fare better as inspiration if they fit in with current naming trends. When Barack Obama was inaugurated as president in 2009, his name had a surge in popularity, but still has not made it into the top 1000 names in the United States. His daughter Malia, on the other hand, jumped over 200 spots to the 191st spot that year. While Barack is much more influential than his daughter, Barack is a name with a sound unlike other top American names. Malia is Hawaiian, but sounds similar to top names like Amelia and Sophia. Names that fit current naming trends and have prestige attached to them fare especially well. The name Blair surfaced as a girl's name in the mid-1980s after being featured on "The Facts of Life" as the name of the wealthy character Blair Warner. Blair had previously been used infrequently and mostly as a masculine name. When the series aired, the perceived prestige of the name escalated and fit into the surname name trend.
Some names have a variety of factors that inspire their popularity. The name Bentley was inspired by the luxury car brand, but got a further boost by the show "Teen Mom" when reality star Maci Bookout used the name for her son. The already popular name Tiffany had a rise in usage following the popularity of the singer Tiffany in the mid-1980s.
In 2020, after the death of basketball player Kobe Bryant and his teenage daughter Gianna Bryant, the names Kobe and Gianna both experienced a massive rise in popularity. Kobe experienced a 175% boost in popularity, while Gianna experienced an even bigger boost in popularity of 216%, placing it at the 24th place of the top 100 most popular girls' names for 2020, according to BabyCenter.
Religion.
Religious names are extremely popular in the United States. Most of the popular names are rooted in the Christian Bible, but other religions are represented, such as in the popular name Mohammed. Names like Jacob, Noah, Elijah, John, Elizabeth, Leah, and Jesús consistently rank very high. Some parents choose names for their religious significance, but there are also many parents who choose names based in religion because they are family names or simply because they are culturally popular. Other popular names are inspired by religion in other ways such as Nevaeh, which is Heaven spelled backwards. Christian, Faith, Angel, Trinity, Genesis, Jordan, Zion, and Eden are names which reference religion.
Gender.
Research suggests that American parents are more likely to use established, historical names for boys and are much more likely to name boys after relatives and ancestors. Boys' names, on average, are more traditional than girls' names, and are less likely to be currently fashionable. This trend holds true across racial lines. There is a much quicker turnover within girls' names than boys'. Parents of girls are much more likely to demonstrate their creativity in the naming of their daughters than their sons. In Alice Rossi's 1965 study of naming conventions, she theorizes that the gender differences in naming strategies exist because of the perceived roles of men and women in society. "Women play the more crucial role in family and kin activities, while men are the symbolic carriers of temporal continuity of the family."
Gender name usage also plays a role in the way parents view names. It is not uncommon for American parents to give girls names that have traditionally been used for boys. Boys, on the other hand, are almost never given feminine names. Names like Ashley, Sidney, Aubrey, Courtney, and Avery originated as boys' names. Traditionally masculine or androgynous names that are used widely for girls have a tendency to be abandoned by the parents of boys and develop an almost entirely female usage.
There has been a rise in the usage of gender-neutral names for both girls and boys, according to a study by the baby name website Nameberry. Sixty percent more babies of both genders received gender-neutral names in 2015 than in 2005, according to the study.
Other factors.
Research has demonstrated that a number of factors come into play when it comes to naming strategies. This seems to be true across racial lines. Also, higher socioeconomic status (SES) families tend to choose different names than lower SES families. Over time, the lower SES families gravitate toward those names. As those names catch on with the lower SES families, higher SES families abandon them. The name Ashley was popular among