Square - The QR code used to pay has the Square logo integrated into it.
One of the coolest thing about QR codes is that their original (and possibly still actually the most common) use case is industrial; the system was developed to track car parts through a manufacturing process. Since car parts have to go through a lot of different processes and need to be trackable even when (perhaps especially when) things go badly, they developed a 2-dimensional barcode system with very high error correction rates.
There are actually different levels of error correction, too; a higher level means you can store less info. The highest level has a 30% error correction rate, meaning that literally 30% of the QR code can be destroyed while still maintaining scanability!
But yeah it’s a bit cool that we use it to put logos on things I guess.