Ronaldo telah menandatangani banyak sponsor saat reputasinya cepat tumbuh ketika di Manchester United.<ref>{{cite web|author=Robert Booth |url=http://www.guardian.co.uk/football/2009/jun/11/cristiano-ronaldo-transfer-real-madrid |title=From £175 to £80m in 14 years – but can Cristiano Ronaldo earn it like Beckham? |publisher=The Guardian |date= |accessdate=8 July 2013}}</ref> Pada bulan Oktober 2009, Ronaldo dinobatkan sebagai spokesmodel baru untuk pakaian dan celana jeans Emporio Armani pria.<ref>{{cite web|last=Pruitt |first=Allie |url=http://weeklyworldnews.com/sports/22057/new-cristiano-ronaldo-megan-fox-armani-ads/ |title=New Cristiano Ronaldo, Megan Fox Armani Ads |publisher=Weekly World News |date= |accessdate=8 July 2013}}</ref> Pada bulan Februari 2010, ia kembali menaikkan durasi kontrak dengan perusahaan pakaian olahraga [[Nike]] Amerika hingga 2014.<ref name=newNikedeal>{{cite web|url=http://www.smh.com.au/sport/football/ronaldo-offered-9-million-nike-deal-report-20100226-p6gs.html |title=Ronaldo offered $9 million Nike deal |publisher=Smh.com.au |date=26 February 2010 |accessdate=8 July 2013}}</ref> Ia juga telah menandatangani sponsor lainnya dari perusahaan [[Coca-Cola]], [[Castrol]], [[Konami]], [[Banco Espirito Santo]], [[Motorola]], [[Jacob & Co]], [[Shopee]], [[Herbalife]], [[KFC]] dan [[KFCFree Fire]].<ref>{{cite web|url=http://www.sportspromedia.com/news/ronaldo_endorses_lubricants_giant/ |title=Ronaldo endorses lubricants giant – Sports Personal Endorsement news – Soccer |publisher=SportsPro Media |date= |accessdate=10 July 2013}}</ref><ref>{{cite web|url=http://www.forbes.com/sites/kurtbadenhausen/2012/07/11/is-cristiano-ronaldo-the-worlds-most-marketable-athlete/ |title=Is Cristiano Ronaldo The World's Most Marketable Athlete? |publisher=Forbes |date=7 November 2012 |accessdate=8 July 2013}}</ref><ref>{{cite web |url=http://www.soccer-training-info.com/forbes_top_soccer_earners.asp |title=Forbes: Top Soccer Earners |publisher=Soccer Training Info |date=30 June 2009 |accessdate=8 July 2013 |archive-date=2017-07-18 |archive-url=https://web.archive.org/web/20170718112942/http://soccer-training-info.com/forbes_top_soccer_earners.asp |dead-url=yes }}</ref><ref>{{cite web |url=http://cristianoronaldoportugal.com/latest-news/cristiano-ronaldo-is-second-highest-earner-in-forbs-list |title=Cristiano Ronaldo is second highest earner in Forbs list |publisher=Cristianoronaldoportugal.com |date=23 April 2010 |accessdate=8 July 2013 |archive-date=2014-10-24 |archive-url=https://web.archive.org/web/20141024193815/http://cristianoronaldoportugal.com/latest-news/cristiano-ronaldo-is-second-highest-earner-in-forbs-list |dead-url=yes }}</ref><ref>{{cite web|url=http://isportconnect.com/index.php?option=com_content&view=article&id=18803:cristiano-ronaldo-becomes-new-face-of-watch-brand-jacob-a-co&catid=7:sports-sponsors&Itemid=17 |title=Cristiano Ronaldo Becomes New Face of Watch Brand Jacob & Co |publisher=Isportconnect.com |date=19 April 2013 |accessdate=8 July 2013}}</ref><ref>{{Cite web |url=http://www.fortmilltimes.com/2013/06/04/2736182/herbalife-is-new-official-nutrition.html |title=Salinan arsip |access-date=2013-12-17 |archive-date=2013-06-10 |archive-url=https://web.archive.org/web/20130610182618/http://www.fortmilltimes.com/2013/06/04/2736182/herbalife-is-new-official-nutrition.html |dead-url=yes }}</ref><ref>{{cite web|url=http://www.insideworldsoccer.com/2013/05/cristiano-ronaldo-arabian-kfc-advert.html |title=Cristiano Ronaldo tucks into bucket of KFC in new advert |work=inside World Soccer |date=17 May 2013}}</ref> Semua sponsorship-nya telah memberi pendapatan untuknya total sekitar $ 21.000.000 per tahun pada Juni 2013.<ref>{{cite web|url=http://www.forbes.com/profile/cristiano-ronaldo/ |title=Cristiano Ronaldo |publisher=Forbes |date=18 April 2012 |accessdate=8 July 2013}}</ref> Pada bulan Juni 2012, SportsPro menilai Ronaldo sebagai peringkat 5 atlet yang paling laku di dunia,<ref>{{cite news|url=http://articles.timesofindia.indiatimes.com/2012-06-26/off-the-field/32424123_1_mc-mary-kom-london-olympics-world-champion-boxer|title=MS Dhoni, Mary Kom world's 16th, 38th most marketable athletes|date=26 June 2012|work=The Times of India|access-date=2013-12-17|archive-date=2013-06-18|archive-url=https://web.archive.org/web/20130618042111/http://articles.timesofindia.indiatimes.com/2012-06-26/off-the-field/32424123_1_mc-mary-kom-london-olympics-world-champion-boxer|dead-url=yes}}</ref> tetapi ia merosot ke posisi kedelapan pada tahun 2013.<ref>{{cite web|url=http://www.insideworldsoccer.com/2013/05/neymar-tops-list-most-marketable-athletes-in-the-world.html |title=Neymar tops list of most marketable athletes in the world |work=inside World Soccer |date=14 May 2013}}</ref>
