From the Hebrew name בֶּן־אוֹנִי (Ben-'oniy) meaning 'son of sorrows' 
First element (Ben-):
Hebrew ben = 'son'
Last element (-oni):
Hebrew oni = 'sorrows'
See also Ben
For female forms see also Benonette
Norwegian: Benonisen (♂) 
In the Old Testament, Benjamin was named Benoni until his father changed it.
|Female ♀||Male ♂|
|#: count of main first name only|
|&: count of both main and additional first names|
| Name counts are approximate as statistics normally is not published
for names given to less than 3 or 5 persons per country.
No recent statistics trend found in databases for Benoni.