No, sorry, there isn't. But, many web sites have been written to provide a drop down box versus hovering over a link. And, there is always the "press and hold" action on the iPad that will provide some of the capabilities of right clicking.
Was there, is there a specific app or something for which you need a right click? Maybe if we knew which app or function is giving you trouble, we can provide assistance or a workaround...
Marilyn