Mobile Suit Gundam: Iron-Blooded Orphans (Japanese: 機動戦士ガンダム 鉄血のオルフェンズ, Hepburn: Kidō Senshi Gandamu: Tekketsu no Orufenzu), also known as Gundam IBO and G-Tekketsu (Gの鉄血), is a 2015 Japanese television mecha anime series and the fourteenth mainline entry in Sunrise's long-running Gundam franchise, succeeding Gundam Reconguista in G. The series is directed by Tatsuyuki Nagai and written by Mari Okada, a team which previously collaborated on Toradora! and Anohana: The Flower We Saw That Day. It aired in Japan on MBS and other JNN stations from October 4, 2015 to March 27, 2016, making this the first Gundam series to return to a Sunday late afternoon time slot since Mobile Suit Gundam Seed. A second season premiered the following year on October 2, 2016.

Iron-Blooded Orphans follows the exploits of a group of juvenile soldiers who establish their own security company after rebelling against the adults who betrayed them on a futuristic, terraformed Mars. The series deals with several real-life problems such as war, slavery, child soldiers, poverty, neo-colonialism, and corruption. The catchphrase of the series is "The sustenance of life is on the battlefield." (いのちの糧は、戦場にある。, Inochi no kate wa, senjō ni aru.)