Multiple citizenship, dual citizenship, multiple nationality or dual nationality, is a person’s citizenship status, in which a person is concurrently regarded as a citizen of more than one state under the laws of those states.

How to Apply
Tanzania does not currently allow its citizens to hold foreign citizenship in addition to their Tanzanian citizenship, except in the case of Tanzanian woman acquiring foreign nationality through marriage, or persons under 18 who acquire Tanzanian citizenship by birth or descent. Multiple nationals automatically lose their Tanzanian citizenship at 18 unless they renounce all other citizenship.

1. Marriage certificate for women only
2. Birth certificate for children under the age of 18 years

Tanzanian Ministry of Foreign Affairs
Legal Department
P.O Box 9000 Dar es Salaam, Tanzania
Telephone: 255 22 2111906

Registrar Generals Office
Office of the Administrator General
Simu Street
P. O. Box 9183 Dar es Salaam. Tanzania
Telephone No. 255-22-2123325

• Married women and children under the age of 18 years.

Explain the fees structure which is required for obtaining the certificate/document.

• Under 18 children will renounce their citizenship of the other country in order to retain Tanzania citizenship.

Please attach documents that can be used by people. e.g. links

Please attach sample completed documents that would help other people.

Please explain processing time taken in obtaining the document/certificate.

Videos explaining the procedure or to fill the applications. 
Attach videos using the following tag <&video type='website'>video ID|width|height<&/video&> from external websites. 	
Please remove the '&' inside the tags during implementation.
Website = allocine, blip, dailymotion, facebook, gametrailers, googlevideo, html5, metacafe, myspace, revver, 
sevenload, viddler, vimeo, youku, youtube
width = 560, height = 340, Video ID = Can be obtained from the URL of webpage where the video is displayed.
e.g In the following url 'http://www.youtube.com/watch?v=Y0US7oR_t3M' Video ID is 'Y0US7oR_t3M'.

• You can only attain dual citizenship by marriage for women only or by birth for children of 18 years and below.

1. Full name of applicant
2. Date of Birth
3. Nationality
4. Sex
5. Parents names (for cases of children)
6. Parents nationality (for cases of children)
7. Full name of husband (for cases of married women)
8. Citizenship of husband (for cases of married women)
9. Place of marriage (for cases of married women)
10. Date of marriage (for cases of married women)

• Dual citizenship in Tanzania refers to holding a foreign citizenship along with Tanzania citizenship. It is the nationality law that governs citizenship and other forms of nationality in Tanzania.
• Currently the Tanzania nationality law does not allow its citizens to hold other foreign countries citizenship; except in cases of women who acquire foreign citizenship through marriage and a Tanzanian child may acquire dual citizenship until the child reaches 18 years of age.

• The Tanzania Citizenship Act

Please explain what are other uses of obtaining this document/certificate.
e.g. Birth Certificate can be used as proof of identity.

Place some external links which might help.

More information which might help people.