Mega Man Battle Network 6: Cybeast Falzar and Mega Man Battle Network 6: Cybeast Gregar[b] are 2005 tactical role-playing video games developed and published by Capcom for the Game Boy Advance (GBA) handheld game console. They are the sixth and final games in the Mega Man Battle Network series, and involves Lan's family and MegaMan.EXE moving to Cyber City, only to need to stop the returning WWW (World Three) from re-awakening the Cybeasts.

Battle Network 6 marks the end of the Battle Network series, as shown in the ending, although this wasn't initially the case; the developers stated the decision to end the series was only made part-way through development, and after several of the graphics were re-done. The international versions of the games also removed a significant amount of content, primarily due to Konami not localizing Shin Bokura no Taiyō: Sabata's Counterattack for Western territories.

Like with the previous few games, Mega Man Battle Network 6 received a generally tepid reception from critics, who near-universally highlighted lack of improvements from previous installments in terms of graphics and gameplay, although some praised its story. Despite being considered the end of the series, one last game, Rockman.EXE: Legend of Network, released in 2006 in Japan for mobile phones. A successor to the Battle Network series, titled Mega Man Star Force, also released in 2006 for the Nintendo DS.