This volume contains some of the papers there were presented at ACAL 51–52, which was organized virtually at the University of Florida. A couple were accepted for presentation at ACAL 51, which was canceled because of COVID-19. The theme of ACAL 51–52 was \textit{African linguistics: Pushing the boundaries}. There are 18 papers and an introduction: two phonetics papers, five phonology papers, nine syntax papers, one sociolinguistics paper and one typology paper.