132 according to this list:
Distilleries that have bottled something:
1 Aberfeldy
2 Aberlour
3 Abhainn Dearg
4 Ailsa Bay
5 Allt-a-Bhainne
6 Annandale
7 Arbikie
8 Ardbeg
9 Ardmore
8 Ardbeg
9 Ardmore
10 Ardnamurchan
11 Arran
12 Auchentoshan
13 Auchroisk
14 Aultmore
15 Balblair
16 Balmenach
17 Balvenie
18 Benriach
19 Benrinnes
20 Benromach
21 Ben Nevis
22 Bladnoch
23 Blair Athol
24 Bowmore
25 Braeval
26 Bruichladdich
27 Bunnahabhain
28 Caol Ila
29 Cardhu
30 Clynelish
31 Cragganmore
32 Craigellachie
33 Daftmill
34 Dailuaine
35 Dalmore
11 Arran
12 Auchentoshan
13 Auchroisk
14 Aultmore
15 Balblair
16 Balmenach
17 Balvenie
18 Benriach
19 Benrinnes
20 Benromach
21 Ben Nevis
22 Bladnoch
23 Blair Athol
24 Bowmore
25 Braeval
26 Bruichladdich
27 Bunnahabhain
28 Caol Ila
29 Cardhu
30 Clynelish
31 Cragganmore
32 Craigellachie
33 Daftmill
34 Dailuaine
35 Dalmore
36 Dalmunach
37 Dalwhinnie
38 Deanston
37 Dalwhinnie
38 Deanston
39 Dornoch
40 Dufftown
41 Eden Mill
42 Edradour
43 Fettercairn
44 Glasgow Distillery Co.
45 Glenallachie
46 Glenburgie
47 Glencadam
48 Glendronach
49 Glendullan
50 Glenfarclas
51 Glenfiddich
52 Glengarioch
53 Glenglassaugh
54 Glengoyne
55 Glengyle
56 Glenkinchie
57 Glenlivet
58 Glenlossie
59 Glenmorangie
60 Glenrothes
61 Glentauchers
62 Glenturret
63 Glen Elgin
64 Glen Grant
65 Glen Keith
66 Glen Moray
67 Glen Ord
68 Glen Scotia
69 Glen Spey
70 Highland Park
40 Dufftown
41 Eden Mill
42 Edradour
43 Fettercairn
44 Glasgow Distillery Co.
45 Glenallachie
46 Glenburgie
47 Glencadam
48 Glendronach
49 Glendullan
50 Glenfarclas
51 Glenfiddich
52 Glengarioch
53 Glenglassaugh
54 Glengoyne
55 Glengyle
56 Glenkinchie
57 Glenlivet
58 Glenlossie
59 Glenmorangie
60 Glenrothes
61 Glentauchers
62 Glenturret
63 Glen Elgin
64 Glen Grant
65 Glen Keith
66 Glen Moray
67 Glen Ord
68 Glen Scotia
69 Glen Spey
70 Highland Park
71 Inchdairnie
72 Inchgower
73 Isle of Jura
72 Inchgower
73 Isle of Jura
74 Isle of Raasay
75 Kilchoman
76 Kingsbarns
77 Kininvie
78 Knockando
79 Knockdhu
80 Lagavulin
81 Laphroaig
82 Linkwood
83 Loch Lomond
84 Longmorn
85 Macallan
86 Macduff
87 Mannochmore
88 Miltonduff
89 Mortlach
75 Kilchoman
76 Kingsbarns
77 Kininvie
78 Knockando
79 Knockdhu
80 Lagavulin
81 Laphroaig
82 Linkwood
83 Loch Lomond
84 Longmorn
85 Macallan
86 Macduff
87 Mannochmore
88 Miltonduff
89 Mortlach
90 Ncn'ean
91 Oban
92 Old Pulteney
93 Royal Brackla
94 Royal Lochnagar
95 Scapa
96 Speyburn
97 Speyside
98 Springbank
99 Strathearn
100 Strathisla
101 Strathmill
102 Talisker
103 Tamdhu
104 Tamnavulin
105 Teaninich
106 Tobermory
107 Tomatin
108 Tomintoul
91 Oban
92 Old Pulteney
93 Royal Brackla
94 Royal Lochnagar
95 Scapa
96 Speyburn
97 Speyside
98 Springbank
99 Strathearn
100 Strathisla
101 Strathmill
102 Talisker
103 Tamdhu
104 Tamnavulin
105 Teaninich
106 Tobermory
107 Tomatin
108 Tomintoul
109 Torabhaig
110 Tormore
111 Tullibardine
112 Wolfburn
Distillleries that haven't bottled a 3 year old yet
113 Aberargie
114 Ardnahoe
115 Ballindalloch
116 Borders
117 Clydeside
118 Deeside
110 Tormore
111 Tullibardine
112 Wolfburn
Distillleries that haven't bottled a 3 year old yet
113 Aberargie
114 Ardnahoe
115 Ballindalloch
116 Borders
117 Clydeside
118 Deeside
119 Falkirk
120 Glenwyvis
121 Holyrood
122 Isle of Harris
123 Lagg
122 Isle of Harris
123 Lagg
124 Lindores Abbey
125 LoneWolf Spirits
126 Roseisle
Grain
127 Cameron Bridge
128 Girvan
129 Invergordon
130 North British
131 Starlaw
132 Strathclyde
The Joker
??? Loch Ewe
125 LoneWolf Spirits
126 Roseisle
Grain
127 Cameron Bridge
128 Girvan
129 Invergordon
130 North British
131 Starlaw
132 Strathclyde
The Joker
??? Loch Ewe