I worked with a couple of the tabs already on here (Dissonant & ezD) and added in some 
strummed chords.
their tabs are awesome, hope you like my tweaked version.

Intro:

         C              C
e--------------------------------------|
B--------1--------------1--------------|
G------0---0----------0--0-------------|
D----2-------2-----2-------2-----------|
A--3-------------3---------------------|
E--------------------------------------|

Verse 1:
     C                F                   C
     O Ho-ly Night! The Stars are bright-ly shin-ing,
e|---0--0-0----3----3----5-----5----1-----5--8----3--------------------------|
B|---1---------1---------6----------1-------------1--------------------------|
G|---0---------0---------5----------2-------------0--------------------------|
D|---2------------------------------3-------------2--------------------------|
A|----------------------------------3----------------------------------------|
E|---------------------------------------------------------------------------|

     C            C           G7              F
     It is the night of the dear Sav-ior's birth.
e|---3---0-----------0---1---3----1------------------------------------------|
B|---1------3----1-----------0--------3/1----1-------------------------------|
G|---0-----------0-----------0---------------2-------------------------------|
D|---2-----------2-----------0---------------3-------------------------------|
A|---3-----------3-----------2---------------3-------------------------------|
E|---------------------------3-----------------------------------------------|



      C              F                       C
     Long lay the world in sin and er-ror pin-ing
e|----0----0---0----3~---3--5---5---1--5---8---3-----------------------------|
B|----1-------------1-------6-------1----------1-----------------------------|
G|----0-------------0-------5-------2----------0-----------------------------|
D|----2---------------------7-------3----------2-----------------------------|
A|----------------------------------3----------------------------------------|
E|---------------------------------------------------------------------------|

             Em               B7            Em
     Till he ap-peared and the soul felt its worth.
e|----3----2-0---7------3---5/---7----8----7/---0----------------------------|
B|-----------0---8---------------7--------------2----------------------------|
G|-----------0---9---------------8--------------0----------------------------|
D|-----------2---9---------------7--------------2----------------------------|
A|-----------2---7---------------9--------------2----------------------------|
E|-------------------------------7--------------0----------------------------|


Pre-Chorus:
       G7                  C
     A thrill of hope the wear-y world re-joic-es
e|---3----3---5--------3---5---3--8----3---5----3----------------------------|
B|---3------------3----1---------------1--------1----------------------------|
G|---4------------4----0---------------0--------0----------------------------|
D|---3------------3----2---------------2--------2----------------------------|
A|---5------------5----3---------------3--------3----------------------------|
E|---3------------3----------------------------------------------------------|

        G7                 C
     For yon-der breaks a new and glo-rious morn.
e|---3----3---5--------3---5---3--8-----0----3----------------------------|
B|---3------------3----1---------------------1----------------------------|
G|---4------------4----0---------------------0----------------------------|
D|---3------------3----2---------------------2----------------------------|
A|---5------------5----3---------------------3----------------------------|
E|---3------------3-------------------------------------------------------|

Chorus:
     Am            Em       Dm               Am
     Fall on your knees! O hear the an-gels voic-es!
e|-----8---7--5-----7~---7--10----5---5--5----8---8--------------------------|
B|------------5-----8-------10--------6-------5------------------------------|
G|------------5-----9-------10--------7-------5------------------------------|
D|------------7-----9-------12--------7-------7------------------------------|
A|------------------7-------12--------5--------------------------------------|
E|--------------------------10--------5--------------------------------------|

        C    G7      C  F      C    G7                C
     O night___ di-vine! O___ night when Christ was born.
e|---8-12///10-3//--8----7/5---3------3----5-----3---3-----------------------|
B|---8---------------------6---1---------------------1-----------------------|
G|---9---------------------6---0---------------------0-----------------------|
D|---------------------------------------------------2-----------------------|
A|---------------------------------------------------3-----------------------|
E|---------------------------------------------------------------------------|


      G7        C  F   C        G7                C
   (There are different variations of ending parts of the next lyrics)
    O night di-vine! O night_____  O    night di-vine!
                  "               When Christ was born.
                  "                O     ho - ly night.
e|--8--10---3//-12---10-8/////7----7------8///10--8--------------------------|
B|-----12---------------8-------------------------8--------------------------|
G|-----10---------------9-------------------------9--------------------------|
D|-----12-----------------------------------------10-------------------------|
A|-----10-----------------------------------------10-------------------------|
E|------------------------------------------------8--------------------------|



Verse 2:
     C                F                   C
     Tru- ly   He taught us to love one   a-no-ther
e|---0--0-0----3----3----5-----5----1-----5--8----3--------------------------|
B|---1---------1---------6----------1-------------1--------------------------|
G|---0---------0---------5----------2-------------0--------------------------|
D|---2------------------------------3-------------2--------------------------|
A|----------------------------------3----------------------------------------|
E|---------------------------------------------------------------------------|

     C            C           G7           F
    His law is love and His  gos-pel  is   peace
e|---3---0-----------0---1---3----1------------------------------------------|
B|---1------3----1-----------0--------3/1----1-------------------------------|
G|---0-----------0-----------0---------------2~------------------------------|
D|---2-----------2-----------0---------------3-------------------------------|
A|---3-----------3-----------2---------------3-------------------------------|
E|---------------------------3-----------------------------------------------|


      C              F                       C
   Chains shall He break, for the slave is our bro-ther
e|----0----0---0----3~---3--5---5---1--5---8---3-----------------------------|
B|----1-------------1-------6-------1----------1-----------------------------|
G|----0-------------0-------5-------2----------0-----------------------------|
D|----2---------------------7-------3----------2-----------------------------|
A|----------------------------------3----------------------------------------|
E|---------------------------------------------------------------------------|




             Em               B7            Em
     And  in His name all   op-pres-sion shall cease
e|----3----2-0---7------3---5////7----8----7///-0----------------------------|
B|-----------0---8---------------7--------------2----------------------------|
G|-----------0---9---------------8--------------0----------------------------|
D|-----------2---9---------------7--------------2----------------------------|
A|-----------2---7---------------9--------------2----------------------------|
E|-------------------------------7--------------0----------------------------|

Pre-Chorus:
       G7                  C
     Sweet hymns of joy in grate-ful chor-us we raise
e|---3----3---5--------3---5---3--8----3---5----3----------------------------|
B|---3------------3----1---------------1--------1----------------------------|
G|---4------------4----0---------------0--------0----------------------------|
D|---3------------3----2---------------2--------2----------------------------|
A|---5------------5----3---------------3--------3----------------------------|
E|---3------------3----------------------------------------------------------|

       G7                  C
     Let all with-in us praise His ho-ly name.
e|---3----3---5--------3---5---3--8-----0----3----------------------------|
B|---3------------3----1---------------------1----------------------------|
G|---4------------4----0---------------------0----------------------------|
D|---3------------3----2---------------------2----------------------------|
A|---5------------5----3---------------------3----------------------------|
E|---3------------3-------------------------------------------------------|

Chorus:
     Am            Em       Dm               Am
     Christ is the lord, O praise His name for-ev-er
e|-----8---7--5-----7~---7--10----5---5--5----8---8--------------------------|
B|------------5-----8-------10--------6-------5------------------------------|
G|------------5-----9-------10--------7-------5------------------------------|
D|------------7-----9-------12--------7-------7------------------------------|
A|------------------7-------12--------5--------------------------------------|
E|--------------------------10--------5--------------------------------------|

      C    G7      C  F      C    G7          C
     His pow-er and glor___-y  ev   -er -more   pro-claim
e|---8-12///10-3/---8----7/5---3------3----5-----3---3-----------------------|
B|---8---------------------6---1---------------------1-----------------------|
G|---9---------------------6---0---------------------0-----------------------|
D|---------------------------------------------------2-----------------------|
A|---------------------------------------------------3-----------------------|
E|---------------------------------------------------------------------------|

      G7        C  F   C        G7         C
     His pow-er and glor-y ev-er-more      pro-claim
e|--8--10---3/--12---10-8-----7----7------8///10--8--------------------------|
B|-----12---------------8-------------------------8--------------------------|
G|-----10---------------9-------------------------9--------------------------|
D|-----12-----------------------------------------10-------------------------|
A|-----10-----------------------------------------10-------------------------|
E|------------------------------------------------8--------------------------|