In this case I would certainly use a hash. You say you have the above bit of code duplicated several times in your script? This is immediately a sign that your code can probably be re-worked to eliminate the duplication.

my @FIELDS = (
   company_name => 'Company Name',
   company_addr => 'Company Address',
   ...
);

for (my $i = 0; $i < @FIELDS; $i+=2) {
   my $field = $cgi->textfield(
      -name    => $FIELDS[$i],
      -default => $tabdata->{CompanyInfo}->{$FIELDS[$i]},
      -size    => 30,
   );

   $screen->AppendToSection('body', <<"EOF");
      <tr>
         <td class='fieldname'>$FIELDS[$i+1]</td>
         <td class='fieldvalue'>$field</td>
      </tr>
EOF
}
[download]

If your code varies in more than this respect (e.g. size, the use of another hash key besides CompanyInfo, etc), you could re-structure the @FIELDS array something like this:

my @ARRAY = (
   'Company Name'    => [ 'CompanyInfo' => 'company_name', 30 ],
   'Company Address' => [ 'CompanyInfo' => 'company_addr', 60 ],
   ...
);
[download]

Then adapt your code to follow suit..