「旧姓は○○です」はMy original family name is ○○という言い方もあります。
直訳で「元の苗字は○○です」という意味です。
結婚前からの知り合いに、もしメールや電話で連絡する場合ならこのようにも伝えられます：
例) This is [first name(名)] [last name(性)], but my original family name is ○○.
Most commonly used is 'maiden'.
You can use this to explain what your last name was before you got married and also use it to describe others' previous name
e.g. My mother's maiden name was Adams.
最も一般的なのは 'maiden' です。これは結婚する前の自分、またはそれ以外の人の名字を説明する際に使えます。
例：
My mother's maiden name was Adams.
（母の旧姓は Adams でした）
Tradiitonally women take their husbands name when they get married...they give up their "MAIDEN NAME" This is of course a changing reality and many women now prefer to keep their original/ Maiden name and simply add it to their husband's: EG Mavolwane-Wright
"I want to keep my maiden name when I marry..."
結婚すると女性は伝統的に夫の姓を名乗るようになります。"MAIDEN NAME" （旧姓）を捨てます。これにはもちろん実生活の変化が伴います。そして今、多くの女性は本来の旧姓を保有することを好み、夫の姓のあとそれをにつけます。例えば、 Mavolwane-Wright という感じです。
例
"I want to keep my maiden name when I marry..."
（結婚しても私の旧姓を名乗りたいです。）
1. For a woman, 'maiden name' is the surname used before marriage.
2. Family name is the surname used by you and your family.
3. Surname is a person's second name. A woman keeps this name until she is married when she acquired her husband's surname.
Maiden name' refers to a woman's surname prior to getting married.
After marriage she uses her husband's surname.
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Examples
A: My maiden name is Smith.
B: What is your surname now?
A: James
A: What is your maiden name?
B: My surname was Smith before I got married.
Maiden name'は結婚前の苗字を指します。結婚後は夫の姓を使います。
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Examples
A: My maiden name is Smith.私の旧姓はSmithです。
B: What is your surname now?今の名字は？
A: James Jamesです
A: What is your maiden name?あなたの旧姓は？
B: My surname was Smith before I got married.結婚前の名字はSmithです
A) My maiden name is ....
*Maiden -an unmarried girl or young woman.
*Maiden name - Surname before you got married
Example - My maiden surname before i got married was September
B)Before i got married my surname was ... - The surname i was born with / the surname that is on my birth certificate /The surname i had before i took my husbands last name.
I hope this helps :-)
A) My maiden name is ....
*Maiden 結婚していないか若い女性
*Maiden name - 結婚前の苗字
Example - My maiden surname before i got married was September 私の旧姓はSeptemberです
B)Before i got married my surname was ... - 生まれた時の苗字、出生証明書の苗字、夫の名前になる前の苗字
役立ちますように！
The official definition of, "the last name before marriage," would be called a, "maiden name," as its the name that was given to you at birth. However we can also use the 2nd example to explain the same concept correctly.
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