Pontprennau and Old St Mellons - results
| Election Candidate |
Party |
Votes |
% |
Outcome |
 Joel Williams |
Welsh Conservatives / Ceidwadwyr Cymreig |
1595 |
25% |
Elected |
| Peter Littlechild |
Welsh Conservative Party Candidate / Ymgeisydd Plaid Geidwadol Cymru |
1343 |
21% |
Elected |
| Nicola Savage |
Welsh Labour / Llafur Cymru |
1297 |
20% |
Not elected |
| Khuram Chowdhry |
Welsh Labour / Llafur Cymru |
1201 |
19% |
Not elected |
| Steve George |
Plaid Cymru, Green Party, Common Ground / Plaid Cymru, Plaid Werdd, Tir Cyffredin |
267 |
4% |
Not elected |
| Ceri Hughes |
Plaid Cymru, Green Party, Common Ground / Plaid Cymru, Plaid Werdd, Tir Cyffredin |
248 |
4% |
Not elected |
| Sarah Elizabeth Mackerras |
Welsh Liberal Democrats / Democratiaid Rhyddfrydol Cymru |
218 |
3% |
Not elected |
| Nigel Mackerras |
Welsh Liberal Democrats / Democratiaid Rhyddfrydol Cymru |
186 |
3% |
Not elected |
| Teresa Browning |
Freedom Alliance. The Real Alternative |
65 |
1% |
Not elected |
| Joel Williams |
Welsh Conservative Party Candidate / Ymgeisydd Plaid Geidwadol Cymru |
|
|
Not elected |