|Also known as|
|Literal meaning||Knowing Wife|
|Revised Romanization||Aneun Waipeu|
|Created by||Studio Dragon |
|Written by||Yang Hee-sung|
|Directed by||Lee Sang-yeob|
|Country of origin||South Korea|
|No. of episodes||16|
|Production company||Chorokbaem Media |
|Picture format||1080i (HDTV)|
|Audio format||Dolby Digital|
|Original release||August 1 –|
September 20, 2018
Familiar Wife (Korean : 아는 와이프; RR : Aneun Waipeu) is a romantic fantasy South Korean television series starring Ji Sung, Han Ji-min, Jang Seung-jo, and Kang Han-na. It aired on tvN from August 1 to September 20, 2018.  
A married couple suddenly finds themselves living entirely different lives after their fates magically change through an unexpected incident.
Cha Joo-hyuk works at a bank and has been married to Seo Woo-jin for five years. When a strange incident happens one day, Joo-hyuk makes a decision that impacts his life and those around him in unexpected ways. Suddenly, the life he had with Woo-jin and his best friend, Yoon Joong-hoo are gone and he is leading a very different life.
How will his first love, Lee Hye-won, factor into his new life? And will it be possible to get his old life back?
The first script reading was held on May 9, 2018 at the conference room of Studio Dragon's main office at the 17th floor of DDMC Building in Sangam-dong, Seoul, South Korea. 
|Familiar Wife OST|
| Soundtrack album by |
|Label||Stone Music Entertainment|
|1.||"Love Me Again"||Ji Pyeong-kwon, Taibian||Ji Pyeong-kwon, Taibian||SF9||03:16|
|2.||"Love Me Again (Inst.)"||Ji Pyeong-kwon, Taibian||03:16|
|1.||"Let Me Stay"||Lee Jong-won, Ji Pyeong-kwon||Yeom Seung-jae, Ji Pyeong-kwon||John Park||02:51|
|2.||"Let Me Stay (Inst.)"||Yeom Seung-jae, Ji Pyeong-kwon||02:51|
|1.||"No Longer Mine" (왜 몰랐을까)||Dingo||Dingo||Roy Kim||03:36|
|2.||"No Longer Mine (Inst.)"||Dingo||03:36|
|1.||"Let Me Show You"||Cho Michelle||Damon Sharpe, Rob Persaud, Adam Argyle, Cho Michelle||N.Flying||03:06|
|2.||"Let Me Show You (Inst.)"||Damon Sharpe, Rob Persaud, Adam Argyle, Cho Michelle||03:06|
|1.||"You In My Dream" (꿈 속의 너)||Lee Jong-won, Namoo||Ji Pyeong-kwon||Damsonegongbang||03:01|
|2.||"You In My Dream (Inst.)"||Ji Pyeong-kwon||03:01|
|1.||"Hello"||Park Woo-sang||Park Woo-sang||U Sung-eun||03:20|
|2.||"Hello (Inst.)"||Park Woo-sang||03:20|
|1.||"Between us"||Various Artists||2:40|
|5.||"Morning Walk"||Various Artists||2:54|
|6.||"One fine day"||Various Artists||2:57|
|7.||"The Beginning"||Various Artists||2:10|
|8.||"Time to remember"||Various Artists||2:23|
|Ep.||Original broadcast date||Average audience share|
(AGB Nielsen) 
|1||August 1, 2018||4.680%(1st)||4.910%(1st)|
|2||August 2, 2018||5.535% (1st)||6.548% (1st)|
|3||August 8, 2018||5.104% (1st)||6.160% (1st)|
|4||August 9, 2018||6.209% (1st)||7.523% (1st)|
|5||August 15, 2018||6.621% (1st)||7.774% (1st)|
|6||August 16, 2018||7.259% (1st)||8.594% (1st)|
|7||August 22, 2018||6.506% (1st)||7.445% (1st)|
|8||August 23, 2018||6.950% (1st)||7.847% (1st)|
|9||August 29, 2018||6.879% (1st)||7.892% (1st)|
|10||August 30, 2018||8.210%(1st)||9.741%(1st)|
|11||September 5, 2018||7.096% (1st)||8.422% (1st)|
|12||September 6, 2018||8.106% (1st)||9.636% (1st)|
|13||September 12, 2018||7.449% (1st)||9.121% (1st)|
|14||September 13, 2018||7.875% (1st)||9.369% (1st)|
|15||September 19, 2018||6.709% (1st)||7.831% (1st)|
|16||September 20, 2018||7.870% (1st)||8.937% (1st)|
|2018||11th Korea Drama Awards||Best Original Soundtrack||"No Longer Mine" (Roy Kim)||Nominated|||
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