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1 Han

1 Han
Riichi
Menzenchin Only
Win a hand after you declared Riichi; You may declare Riichi when you achieve Tenpai (ready hand) at Menzenchin (closed hand)
1 Han
All Simples
Win a hand without any Terminal Tiles (1-Man/9-Man, 1-Pin/9-Pin, 1-Sou/9-Sou, Wind Tiles, and Dragon Tiles)
1 Han
Fully Concealed Hand
Menzenchin Only
Win a hand by Tsumo (drawing the winning tile) at Menzenchin (closed Hand)
1 Han
Seat Wind
Win a hand with a Triplet of Player Wind
1 Han
Prevalent Wind
Win a hand with a Trip of Round Wind
1 Han
Dragons
Win a hand with a Triplet of Dragon Tiles (White, Green or Red)
1 Han
Pinfu
Menzenchin Only
Win a hand with four Sequences and one non-Yakuhai Pair, plus the potential winning tiles must be tiles from both sides of a Sequence
1 Han
Pure Double Sequence
Menzenchin only
Win a hand with two identical Sequences
1 Han
Robbing a Kan
Call a Ron (declare winning) on another player's Kan (when you have a Tenpai for Thirteen Orphans, you can call on a Closed Kan)
1 Han
After a Kan
Win a hand with the tile drawn from the Dead Wall after immediately calling a Kan
1 Han
Under the Sea
Win a hand by Tsumo (drawing the winning tile) with the last tile drawn from the Wall
1 Han
Under the River
Win a hand by Calling ROn (declare winning) on the last discarded tile
1 Han
Ippatsu
Win a hand within 1 turn after declaring Riichi, in addition, draws/discards must not be interrupted by tile calls during that turn

2 Han

2 Han
Double Riichi
Menzenchin Only
Declare Riichi with your starting hand before any tiles are called
2 Han
Triple Triplets
Win a hand with three Triplets with the same number out of the Number Tiles (Man, Pin, Sou)
2 Han
Three Quads
Win a hand with three Quads
2 Han
All Triplets
Win a hand with four Triplets or Quads
2 Han
Three Concealed Triplets
Win a hand with three Closed Triplets or Closed Quads
2 Han
Little Three Dragons
WIn a hand with two Triplets out of the Dragon Tiles (White, Green or Red), plus a Pair of the third Dragon Tile
2 Han
All Terminals and Honors
WIn a hand with only Terminal Tiles (1-Man/9-Man, 1-Pin/9-Pin, 1-Sou/9-Sou, Wind Tiles, and Dragon Tiles)
2 Han
Seven Pairs
Menzenchin Only
Win a hand with seven different Pairs
2 Han
Half Outside Hand
-1 Han after making a call
Win a hand where every Sequence, Triplet and Pair contains at least one Terminal Tile
2 Han
Pure Straight
-1 Han after making a call
Win a hand with a complete Sequence of 1 through 9
2 Han
Mixed Triple Sequence
-1 Han after making a call
Win a hand with three Sequences with the same numbers out of three different Number Tiles (i.e. 123-Man, 123-Pin, 123-Sou)

3 Han

3 Han
Twice Pure Double Sequence
Menzenchin Only
Win a hand with two sets of two identical Sequences (i.e. 123-Man, 123-Man, 456-Sou, 456-Sou)
3 Han
Fully Outside Hand
-1 Han after making a call
Win with a hand where every Sequence, Triplet and Pair contains at least one 1 and 9 out of the Number Tiles (i.e. 1-Man/9-Man, 1-Pin/9-Pin, 1-Sou/9-Sou)
3 Han
Half Flush
-1 Han after making a call
Win a hand with tiles from only one of the three Number Tiles (Man, Pin or Sou) and Honor Tiles (Wind Tiles and Dragon Tiles)

6 Han

6 Han
Full Flush
-1 Han after making a call
Win a hand with tiles from only one of the three Number Tiles (Man, Pin or Sou)

Mangan

Mangan
Mangan at Draw
When a game ends in Exhaustive Draw, you win with this Yaku if all your discarded tiles are Terminal Tiles and none were called by other players

Yakuman

Yakuman
Blessing of Heaven
Dealer Only
Win a hand by Tsumo as a dealer in the first turn with the first draw
Yakuman
Blessing of Earth
Non-Dealer Only
Win a hand by Tsumo as a non-dealer in the first turn before any tiles are called
Yakuman
Big Three Dragons
Win a hand with three Triplets or Quads of all the three Dragon Tiles
Yakuman
Four Concealed Triplets
Menzenchin Only
Win a hand with four Closed Triplets
Yakuman
All Honors
Win a hand with four Triplets and a Pair of the Honor Tiles (Wind Tiles and Dragon Tiles)
Yakuman
All Green
Green Dragon is not Necessary
Win a hand with only green-colored tiles (i.e. all Sou or Green Dragon)
Yakuman
All Terminals
Win a hand with four Triplets and a Pair of 1 and 9 out of the Number Tiles
Yakuman
Thirteen Orphans
Menzenchin Only
Win a hand with one of each 13 Terminal Tiles, plus any tile matching one of them
Yakuman
Four Little Winds
Win a hand with three Triplets or Quads of the Wind Tiles, plus a pair of the fourth wind
Yakuman
Four Quads
Win a hand with four Quads
Yakuman
Nine Gates
Menzenchin Only
Win a hand with tiles from only one of the three Number Tiles in the order of '1112345678999', plus any tile matching one of them