তৃষা [[চেন্নাই]]-এ <ref name=trishamadras/> তাঁর পরিবার মা ও দিদিমার সহিত বসবাস করেন।<ref name="biodata"/> Herতাঁর mother tongue isমাতৃভাষা [[Tamil language|Tamilতামিল]],<ref name=trishamadras>{{cite news|last=Subramaniam|first=Archana|title=My heart belongs here…|url=http://www.thehindu.com/life-and-style/nxg/article2365224.ece|access-date=1 October 2011|newspaper=[[The Hindu]]|date=17 August 2011|location=Chennai, India}}</ref> এবং তিনি [[হিন্দি]], ফ্রান্স ভাষা, ও ইংরেজি ভাষায় সাবলীলসাবলীলভাবে দক্ষ।<ref name="biodata"/><ref>{{cite news | title = My Hindi is very good: Trisha Krishnan | date = 23 June 2010 | publisher=NDTV Movies | url = http://movies.ndtv.com/movie_story.aspx?Section=Movies&ID=ENTEN20100144627&subcatg=MOVIESINDIA&keyword=bollywood | work=[[Press Trust of India]] | access-date = 2011-02-19}}</ref> Her mother Uma Krishnan, had been offered various roles by several Tamil film makers and actors including [[Kamal Hassan]], but turned them down, as she wanted to concentrate on Trisha's career. She accompanies Trisha on film shoots, events, and functions, and they have appeared together only in a [[commercial advertisement]].<ref>{{cite news|last=Subramaniam|first=Anupama|title=Trisha and mum in an advertisement|url=http://www.deccanchronicle.com/channels/showbiz/kollywood/trisha-and-mum-advertisement-496|access-date=1 October 2011|newspaper=[[Deccan Chronicle]]|date=22 August 2011}}</ref> About her relationship with her mother, Trisha remarks, "She has been the pillar of my strength and has stood by me like a rock through thick and thin.[...] Everyone in the industry and my friends know how close I'm to my mom."<ref>{{cite news | first = Sreedhar | last = Pillai | title = Uma Krishnan- Trisha's special bond | date = 26 September 2010 | url = http://articles.timesofindia.indiatimes.com/2010-09-26/news-interviews/28227972_1_mom-mother-and-daughter-smear-campaign |work=The Times of India |location=India | access-date = 2011-02-19}}</ref> Trisha's father died in October 2012.<ref>{{Cite news|url=http://www.sify.com/movies/trisha-s-dad-krishnan-passes-away-news-tamil-mktjvligiegsi.html|title=Trisha's dad Krishnan passes away|work=Sify|access-date=2017-05-09|language=en}}</ref> On 23 January 2015 Trisha became engaged to Varun Manian,<ref>{{cite news|url=http://movies.ndtv.com/regional/actress-trisha-krishnan-engaged-to-varun-manian-731637|title=Actress Trisha Krishnan Engaged to Varun Manian|agency=Indo-Asian News Service|date=24 January 2015|access-date=27 January 2015}}</ref> a Chennai-based businessman.<ref>{{cite web | url=http://timesofindia.indiatimes.com/entertainment/telugu/movies/news/Trisha-to-get-engaged-with-her-boyfriend/articleshow/45794275.cms | title=Trisha to get engaged with her boyfriend | publisher=The Times of India | work=Hemanth Kumar | date=7 January 2015 | access-date=11 January 2015}}</ref> In May 2015, she confirmed that the couple had ended their engagement.<ref>{{cite web | url=http://behindwoods.com/tamil-movies-cinema-news-15/actress-trisha-krishnan-declares-that-she-is-happy-single-and-thankful.html | title= Trisha declares that she is single again | publisher= BehindWoods | work=Kaushik L M | date=7 May 2015 | access-date= 7 May 2015}}</ref><ref>{{cite web|url=http://www.ibtimes.co.in/actress-trisha-gets-engaged-varun-manian-621349 |title=Actress Trisha Gets Engaged to Varun Manian |publisher=International Business Times |date=23 January 2015 |access-date=13 January 2015 |deadurl=unfit |archiveurl=https://web.archive.org/web/20150123172459/http://www.ibtimes.co.in/actress-trisha-gets-engaged-varun-manian-621349 |archivedate=23 January 2015 }}</ref>
