Keyboard shortcut for changing Aspect Ratio

[Guest]

How can I cycle through aspect ratios (crop tool activated) via key command?

[Rob_Cullen]

If you select the Aspect Ratio context (Drop-down) menu, then you can select a specific ratio by using the up/down keyboard arrows to highlight a ratio, then [Enter/Return].

There are no specific Keyboard Shortcuts for each Ratio.

'Crop' keyboard shortcuts available are- (courtesy of Lightroom Queen HOME PAGE )