This paper presents a critical assessment of the utility of the orthography of Dagbani (a Gur language of Ghana) in the documentation, linguistic research, and literacy acquisition of Dagbani. While written literature on Dagbani dates to over a century, it was only in 1997 that the only known documented orthographic rules of the language, the Approved Dagbani Orthography (ADO), was put together. Its stated goal was to address inconsistencies that existed in the orthographic rules at the time. It has since largely served this goal and has remained a resource for linguists engaged in language documentation and linguistic research as well as adult and young learners acquiring literacy in Dagbani in formal and informal settings. The paper discusses the influence of the orthography in the understanding of aspects of Dagbani linguistics and the challenges that remain with its use in modern-day multimodal communication. It shows that while the ADO has impacted literacy, documentation, and research on Dagbani linguistics, aspects of the design of the orthography have limited its potential impact and have given room for the emergence or maintenance of co-orthographic practices used for electronic communication and in the documentation of names in non-native official circles.