| 2751 | Wildcards | Adrian Budau, Andrei Popa, Mihai Calancea | Lot Deva Seniori 2019, baraj 2 | N/A |
| 2752 | Wine Tasting | Giorgio Audrito | IIOT 2021-22 Runda 3 | N/A |
| 2753 | Wordle | Giorgio Audrito | IIOT 2021-22 Runda 4 | N/A |
| 2754 | Words | William Di Luigi | IIOT 2021-22 Runda 3 | N/A |
| 2755 | Worms | Chichirim George | Concursul National de Informatica "Adolescent Grigore Moisil" 17 | N/A |
| 2756 | Wwt | Adrian Budau | Algoritmiada 2018 Runda Finala | N/A |
| 2757 | X | Eugenie Daniel Posdarascu, Mihai Gheorghe | .com 2012 Runda 1 |      3/5 |
| 2758 | X si 0 | Vlad Duta | ONIS 2014, Runda 2 | N/A |
| 2759 | Xcabluri | Dan Constantin Spatarel, Petru Trimbitas | Tabăra ICHB 2012, Ziua 2, Grupa 1 | N/A |
| 2760 | Xcmmdc | Radu Stefan Voroneanu | ONI 2014 Clasele 11-12 | N/A |
| 2761 | XCopy | Pop Ioan Cristian, Tulba-Lecu Gabriel | EJOI 2021, ziua 1 | N/A |
| 2762 | Xerox | Andrei Grigorean | preONI 2008 Runda 3 | N/A |
| 2763 | Xmoto | Tiberiu Savin, Vlad Duta | ONI 2011, clasele 11-12 | N/A |
| 2764 | Xnumere | Bogdan-Cristian Tataroiu, Dragos Alin Rotaru | ONI 2013 Clasele 11-12 | N/A |
| 2765 | Xor | Filip Cristian Buruiana | ONI 2010 - Baraj | N/A |
| 2766 | Xor Max | Adrian Vladu | Concurs de incalzire 2004 |      4/5 |
| 2767 | Xor3 | Adrian Panaete | ONI 2016, clasele 11-12 | N/A |
| 2768 | Xormites | Andrei Popa, Mihai Calancea | Algoritmiada 2017 Runda 2 | N/A |
| 2769 | Xorseq | Tamio-Vesa Nakajima | Algoritmiada 2022, Runda 4 | N/A |
| 2770 | Xortransform | Bogdan Ciobanu, Bogdan Iordache | Lot Seniori Tulcea 2018, baraj 2 | N/A |
| 2771 | Xp | Mugurel Ionut Andreica | ONI 2010, clasa a 10-a | N/A |
| 2772 | Xreverse | Catalin-Stefan Tiseanu, Mircea Dima | Lot Cluj 2009, Baraj 5 | N/A |
| 2773 | Xspe | Cosmin Silvestru Negruseri | Algoritmiada 2012, Runda 3 | N/A |
| 2774 | Yamstp | Mihai Calancea | ONIS 2015, Runda Finala | N/A |
| 2775 | Ydist | Andrei Ciocan | Lot Sovata 2014 Seniori Baraj 3 | N/A |
| 2776 | Yinyang | Eugenie Daniel Posdarascu | OJI 2019, clasa a 10-a | N/A |
| 2777 | Zaharel | Mircea Bogdan Pasoi | Concurs de incalzire 2004 |      4/5 |
| 2778 | Zalmoxis | Tamio-Vesa Nakajima | BOI 2018 | N/A |
| 2779 | Zapada | Alexandru Mosoi | Stelele Informaticii 2005, clasele 9-10 |      4/5 |
| 2780 | Zapezi | Emanuela Cerchez | Campion 2002-2003 | N/A |
| 2781 | Zapezi2 | Mihai Calancea | ONIS 2015, Runda 2 | N/A |
| 2782 | Zaruri | Cosmin Silvestru Negruseri | Infoarena Monthly 2012, Runda 6 | N/A |
| 2783 | Zeap | Mircea Bogdan Pasoi | Happy Coding 2006 |      4/5 |
| 2784 | Zebughil | Cosmin Silvestru Negruseri | preONI 2006 Runda 1 |      3/5 |
| 2785 | Zelda | Tamio-Vesa Nakajima | Algoritmiada 2022, Runda 4 | N/A |
| 2786 | Zero | Stefan Gheorghe | info-arena 1.0 |      3/5 |
| 2787 | Zero 2 | Mircea Bogdan Pasoi | preONI 2007, Runda 3 |      1/5 |
| 2788 | Zeroc | Mugurel Ionut Andreica | Lot Cluj 2009, Baraj 6 | N/A |
| 2789 | Zidar | Adrian Vladu | ONI 2007, clasa 10 | N/A |
| 2790 | Zigsort | Paul Diac, Stefan Ciobaca | ONIS 2014, Runda 3 | N/A |
| 2791 | Zigzag2 | Hasmasan Dragos, Tudor Cozma | Grigore Moisil 2018, 10 | N/A |
| 2792 | Zile de nastere | Mugurel Ionut Andreica | preONI 2002 | N/A |
| 2793 | Zimeria | Daniel Popa | ONI 2014, clasa a 10-a |      2/5 |
| 2794 | Zip | Csaba Patcas | Grigore Moisil 2008, clasele 11-12 | N/A |
| 2795 | Zlego | Andrei Parvu | ONI 2012 - clasele 11-12 | N/A |
| 2796 | Zmeu | Cosmin Bondane | ad-hoc | N/A |
| 2797 | Zmeu2 | Dana Lica | OJI 2003, clasele 11-12 | N/A |
| 2798 | Zombie | Eugenie Daniel Posdarascu | .com 2011 |      1/5 |
| 2799 | Zombies | Lucian Bicsi | Lot Seniori Deva, 2019, baraj 1 | N/A |
| 2800 | Zona | Radu Visinescu | OJI 2013, clasa a 10-a | N/A |