Some children are raised by parents who are not their biological parents. In some cases, an adoption has taken place, replacing one or both biological parents. In other cases, a child has been born to a single mother or her parents have divorced and her father is no longer in communication. Regardless of the reason, some children grow up never knowing their biological father. However, many individuals in this situation decide that they would like to know their biological father and seek him out online.
Find out the name of your biological father. If you were raised by your biological mother, ask her for the name of your father. If she will not cooperate, ask other family members or her friends for help. His name may be on your birth certificate. However, if you were adopted, you probably need to try to obtain your original birth certificate, which should have at least your birth mother's name and may have your birth father's name. Some the USA some states, such as Alaska, Alabama, Oregon, Kansas, Maine, New Hampshire, and Tennessee, allow birth certificates to be easily accessed by adult adoptees. Other states make birth certificates accessible to adoptees born before or after a certain year, while still others require a court order. Check the laws of your state.
Search social networking websites. Once you know your father's name, you can search for him on social networking sites. Many people use these sites to connect so your chances are high that you can find him there. Knowing the possible location of your father and other information can help you narrow down your search.
Use websites geared towards finding people online. Sites such as intellius.com, zabasearch.com and pipl.com search the Internet for you and find as many mentions of the person as possible. These pages can dig up anything from e-mail addresses to physical addresses and phone numbers. Search using your father's name and, if possible, his location.
Enter your father's name into an online phone book. An online phone book can show you where your biological father may be living. However, it can be difficult to weed through the results, especially if your father has a common name.
Sign up with a reunion registry. Sometimes the person you are looking for may also be looking for you. You can do this even if you don't know your father's name. The International Soundex Reunion Registry is one of the most commonly used registries for adoption situations. Register with your information so that you can find your biological father if he is also looking for you. Some localities also have their own reunion registries. If there is one for your area, sign up for that one as well. ISRR has the advantage of accepting registrants from anywhere in the world, at no cost. You can also register if you were separated from your father by foster care or divorce.