<ARTICLE>                 5
<LEGEND>
  THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
  CONSOLIDATED FINANCIAL STATEMENTS FOR THE NINE MONTHS ENDED SEPTEMBER
  30, 1998 OF WAUSAU-MOSINEE PAPER CORPORATION AND IS QUALIFIED IN ITS
  ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                                         
 <PERIOD-TYPE>                                    9-MOS
 <FISCAL-YEAR-END>                          DEC-31-1998
 <PERIOD-END>                               SEP-30-1998
 <CASH>                                           5,185
 <SECURITIES>                                         0
 <RECEIVABLES>                                   88,683
 <ALLOWANCES>                                     9,353
 <INVENTORY>                                    134,208
 <CURRENT-ASSETS>                               238,880
 <PP&E>                                       1,034,112
 <DEPRECIATION>                                 416,830
 <TOTAL-ASSETS>                                 886,484
 <CURRENT-LIABILITIES>                          137,164
 <BONDS>                                        121,452
 <COMMON>                                       169,552
 <PREFERRED-MANDATORY>                                0
 <PREFERRED>                                          0
 <OTHER-SE>                                     264,964
 <TOTAL-LIABILITY-AND-EQUITY>                   886,484
 <SALES>                                        722,899
 <TOTAL-REVENUES>                               722,899
 <CGS>                                          585,640
 <TOTAL-COSTS>                                  665,815
 <OTHER-EXPENSES>                                 (251)
 <LOSS-PROVISION>                                     0
 <INTEREST-EXPENSE>                               5,608
 <INCOME-PRETAX>                                 51,727
 <INCOME-TAX>                                    19,550
 <INCOME-CONTINUING>                             32,177
 <DISCONTINUED>                                       0
 <EXTRAORDINARY>                                      0
 <CHANGES>                                            0
 <NET-INCOME>                                    32,177
 <EPS-PRIMARY>                                     0.56
 <EPS-DILUTED>                                     0.56