UNITED STATES
              SECURITIES AND EXCHANGE COMMISSION
                    Washington, D.C.  20549
                       FORM 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: June 30,2008
Check here if Amendment [  ]; Amendment Number:
This Amendment  (Check only one.):  [   ]  is a restatement.
                                    [    ]  adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name:              Johnston, Reid & Mitchell, Inc.
Address:           P O Box 6549
                   Portsmouth, NH  03802
13F File Number: 028-03787
The institutional investment manager filing this report and the
person by whom it is signed hereby represent that the person
signing the report is authorized to submit it, that all
information contained herein is true, correct and complete, and
that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of
this form.
Person Signing this Report on Behalf of Reporting Manager:
Name:            William Seabury Reid
Title:           Treasurer
Phone:           603-433-3003
Signature, Place, and Date of Signing:
William Seabury Reid    Portsmouth, NH    July 7, 2008
Report Type  (Check only one):
[ X  ]              13F  HOLDINGS REPORT.
[    ]              13f  NOTICE.
[    ]              13f  COMBINATION REPORT.
List of Other Managers Reporting for this Manager:
- - none-
I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE
ACT OF 1934.
FORM 13F SUMMARY PAGE
Report Summary:
Number of Other Included managers:                 0
Form 13F Information Table Entry Total:            173
Form 13F Information Table Value Total:            $117,487,000
List of Other Included Managers:                   None
						
								Voting Authority
	Title of		Value	Shares/	Sh/	Put/	Invstmt	Other
Name of Issuer	Class	CUSIP	(x$1000)	Prn Amt	Prn	Call	Dscretn	Managers	Sole	Shared	None
3M Company	COM	88579Y101	602	8650	SH		Sole				8650
3M Company	COM	604059105	926	13300	SH		Other				13300
Abbott Labs	COM	2824100	1129	21310	SH		Sole				21310
Abbott Labs	COM	2824100	2561	48352	SH		Other				48352
AFLAC	COM	001055102	716	11400	SH		Sole				11400
Air Products	COM	9158106	119	1200	SH		Sole				1200
Air Products	COM	9158106	1354	13692	SH		Other				13692
Amer.Intl. Group	COM	26874107	519	19612	SH		Sole				19612
Amer.Intl. Group	COM	26874107	316	11945	SH		Other				11945
American Express	COM	25816109	228	6060	SH		Other				6060
Amgen	COM	031162100	443	9400	SH		Sole				9400
Anadarko Petroleum	COM	32511107	299	4000	SH		Sole				4000
Anadarko Petroleum	COM	32511107	30	400	SH		Other				400
Anheuser-Busch	COM	35229103	271	4355	SH		Other				4355
Applied Materials	COM	38222105	472	24700	SH		Sole				24700
Applied Materials	COM	38222105	258	13525	SH		Other				13525
AT&T	COM	00206R102	1011	29994	SH		Sole				29994
AT&T	COM	00206R102	1192	35392	SH		Other				35392
Auto Data Processing	COM	53015103	17	400	SH		Sole				400
Auto Data Processing	COM	53015103	579	13810	SH		Other				13810
Baker Hughes Inc	COM	57224107	611	7000	SH		Sole				7000
Baker Hughes Inc	COM	57224107	230	2635	SH		Other				2635
Bank of New York	COM	64057102	776	20522	SH		Other				20522
BankAmerica	COM	06605F102	324	13556	SH		Other				13556
Becton & Dickinson	COM	75887109	325	4000	SH		Sole				4000
Becton & Dickinson	COM	75887109	8	100	SH		Other				100
Berkshire Hathaway	COM	84670207	646	161	SH		Other				161
BP Amoco	COM	55622104	685	9846	SH		Sole				9846
BP Amoco	COM	55622104	1349	19396	SH		Other				19396
Bristol Myers Squibb	COM	110122108	340	16550	SH		Sole				16550
Bristol-Myers Squibb	COM	110122108	328	16000	SH		Other				16000
Brown & Brown Inc.	COM	115236101	388	22300	SH		Sole				22300
Caterpillar Tractor	COM	149123101	517	7000	SH		Sole				7000
Caterpillar Tractor	COM	149123101	442	5983	SH		Other				5983
Chevron Corp	COM	166751107	228	2300	SH		Sole				2300
Chevron Corp	COM	166764100	945	9537	SH		Other				9537
Cimarex Energy	COM	171798101	766	11000	SH		Sole				11000
Cisco Systems	COM	17275R102	546	23450	SH		Sole				23450
Cisco Systems	COM	17275R102	157	6750	SH		Other				6750
Citigroup	COM	172967101	210	12548	SH		Other				12548
CME Group	COM	167760107	900	2350	SH		Sole				2350
Coca Cola	COM	191216100	245	4716	SH		Other				4716
Colgate Palmolive Co	COM	194162103	588	8512	SH		Other				8512
ConocoPhillips	COM	20825C104	374	3962	SH		Sole				3962
ConocoPhillips	COM	20825C104	1020	10809	SH		Other				10809
Consolidated Edison	COM	209115104	287	7350	SH		Other				7350
Corporate Exec Board	COM	21988R102	659	15675	SH		Sole				15675
CoStar Group	COM	22160N109	342	7700	SH		Sole				7700
CoStar Group	COM	22160N109	278	6250	SH		Sole				6250
Covidien Ltd.	COM	G2552X108	213	4450	SH		Sole				4450
CSX Corp	COM	126408103	251	4000	SH		Sole				4000
CVS Corporation	COM	126650100	752	19000	SH		Sole				19000
CVS Corporation	COM	126650100	16	400	SH		Other				400
Developers Div Rlty	COM	251591103	417	12000	SH		Sole				12000
Dominion Resources	COM	25746U109	1396	29400	SH		Sole				29400
Dominion Resources	COM	25746U109	47	1000	SH		Other				1000
Donaldson Inc.	COM	257651109	223	5000	SH		Sole				5000
Dow Chemical	COM	260543103	175	5000	SH		Sole				5000
Dow Chemical	COM	260543103	530	15180	SH		Other				15180
Duke Energy	COM	264399106	226	13000	SH		Sole				13000
Duke Energy	COM	264399106	122	7000	SH		Other				7000
Emerson Electric	COM	291011104	124	2500	SH		Sole				2500
Emerson Electric	COM	291011104	1009	20400	SH		Other				20400
Equity Res Pptys Tr	COM	29476L107	487	12720	SH		Sole				12720
Equity Res Pptys Tr	COM	29476L107	23	612	SH		Other				612
Euronet Worldwide	COM	298736109	250	14800	SH		Sole				14800
Expeditors Inter.	COM	302130109	1715	39900	SH		Sole				39900
Expeditors Inter.	COM	302130109	58	1350	SH		Other				1350
Exxon Mobil Corp	COM	30231G102	1930	21900	SH		Sole				21900
Exxon Mobil Corp	COM	30231G102	6075	68936	SH		Other				68936
FLIR Corp.	COM	302445101	243	6000	SH		Sole				6000
FPL Group Inc	COM	302571104	393	6000	SH		Sole				6000
FPL Group Inc	COM	302571104	254	3870	SH		Other				3870
Freeport McM Cop & Gold Cl B	COM	35671D857	3081	26285	SH		Sole				26285
General Electric	COM	369604103	1433	53700	SH		Sole				53700
General Electric	COM	369604103	2605	97608	SH		Other				97608
Grainger W. W.	COM	384802104	949	11600	SH		Sole				11600
Harris Corp.	COM	413875105	707	14000	SH		Sole				14000
HCP Inc	COM	421915109	458	14400	SH		Sole				14400
HCP Inc	COM	421915109	210	6600	SH		Other				6600
Health Care REIT	COM	42217K106	445	10000	SH		Sole				10000
Helmerich & Payne	COM	423452101	3986	55350	SH		Sole				55350
Helmerich & Payne	COM	423452101	634	8800	SH		Other				8800
Henry Schein	COM	806407102	1217	23600	SH		Sole				23600
Hubbell Inc ClB	COM	443510201	219	5500	SH		Other				5500
Illinois Tool Works	COM	452308109	1207	25400	SH		Sole				25400
Illinois Tool Works	COM	452308109	33	700	SH		Other				700
IMS Health Services	COM	449934108	336	14400	SH		Sole				14400
Intel Corp	COM	458140100	172	8000	SH		Sole				8000
Intel Corp	COM	458140100	646	30065	SH		Other				30065
Int'l Business Mach	COM	459200101	723	6100	SH		Sole				6100
Int'l Business Mach	COM	459200101	271	2290	SH		Other				2290
Iron Mountain Corp	COM	462846106	1027	24500	SH		Sole				24500
Jabil Circuit	COM	466313103	195	11900	SH		Sole				11900
Johnson & Johnson	COM	478160104	1673	26000	SH		Sole				26000
Johnson & Johnson	COM	478160104	1606	24955	SH		Other				24955
JP Morgan Chase	COM	616880100	401	11698	SH		Other				11698
Kimberly Clark	COM	494368103	271	4534	SH		Other				4534
Kimco Realty	COM	49446R109	431	12500	SH		Sole				12500
Knight Transportation	COM	499064103	782	42725	SH		Sole				42725
Lincoln Nat. Corp.	COM	534187109	349	7703	SH		Sole				7703
Linear Technology	COM	535678106	744	22850	SH		Sole				22850
Linear Technology	COM	535678106	144	4425	SH		Other				4425
Lowes Cos	COM	548661107	407	19600	SH		Sole				19600
Lowes Cos	COM	548661107	116	5600	SH		Other				5600
Marathon Oil Corp	COM	902905827	1128	21750	SH		Sole				21750
Marathon Oil Corp	COM	902905827	1205	23230	SH		Other				23230
Marshall & Ilsley Co.	COM	571837103	257	16750	SH		Sole				16750
"Medtronic, Inc"	COM	585055106	78	1500	SH		Sole				1500
"Medtronic, Inc"	COM	585055106	278	5380	SH		Other				5380
Merck & Co	COM	589331107	118	3140	SH		Sole				3140
Merck & Co	COM	589331107	114	3013	SH		Other				3013
Microsoft	COM	594918104	165	6000	SH		Sole				6000
Microsoft	COM	594918104	1092	39700	SH		Other				39700
"Molex Co. ""A"""	COM	608554200	214	9319	SH		Sole				9319
Noble Energy	COM	655044105	2243	22300	SH		Sole				22300
Noble Energy	COM	655044105	473	4700	SH		Other				4700
Nokia Corp	COM	654902204	105	4300	SH		Sole				4300
Nokia Corp	COM	654902204	161	6590	SH		Other				6590
"O'Reilly Automotive, Inc."	COM	686091109	578	25850	SH		Sole				25850
Parker Hannifin	COM	701094104	217	3037	SH		Other				3037
Paychex Inc	COM	704326107	1062	33950	SH		Sole				33950
Paychex Inc	COM	704326107	210	6710	SH		Other				6710
Pepsico	COM	713448108	254	4000	SH		Sole				4000
Pepsico	COM	713448108	1295	20370	SH		Other				20370
Pfizer Inc	COM	717081103	44	2500	SH		Sole				2500
Pfizer Inc	COM	717081103	1268	72578	SH		Other				72578
Plum Creek Timber	COM	729251108	188	4400	SH		Sole				4400
Plum Creek Timber	COM	729251108	1325	31031	SH		Other				31031
Procter & Gamble	COM	742718109	831	13665	SH		Sole				13665
Procter & Gamble	COM	742718109	910	14968	SH		Other				14968
Progress Energy Inc	COM	743263105	146	3500	SH		Sole				3500
Progress Energy Inc	COM	743263105	130	3100	SH		Other				3100
QUALCOM Inc	COM	747525103	3330	75051	SH		Sole				75051
QUALCOM Inc	COM	747525103	87	1960	SH		Other				1960
Resmed	COM	761152107	742	20750	SH		Sole				20750
Ritchie Bros. Auction	COM	767744105	692	25500	SH		Sole				25500
Robert Half Inter.	COM	770323103	372	15500	SH		Sole				15500
"RPM, Inc"	COM	749685103	393	19100	SH		Sole				19100
Saul Centers	COM	804395101	1017	21650	SH		Sole				21650
Schlumberger	COM	806857108	1391	12950	SH		Sole				12950
Schlumberger	COM	806857108	1658	15435	SH		Other				15435
Sigma-Aldrich	COM	826552101	1271	23600	SH		Sole				23600
Sigma-Aldrich	COM	826552101	937	17400	SH		Sole				17400
Sigma-Aldrich	COM	826552101	586	10880	SH		Other				10880
Southern Co	COM	842587107	244	6975	SH		Other				6975
State Street Boston Corp	COM	857477103	363	5665	SH		Other				5665
Stericyle	COM	858912108	2053	39700	SH		Sole				39700
Stericyle	COM	858912108	26	500	SH		Other				500
"Stratasys, Inc"	COM	862685104	271	14700	SH		Sole				14700
Stryker Corp	COM	863667101	1959	31150	SH		Sole				31150
Stryker Corp	COM	863667101	16	250	SH		Other				250
Suncor Energy	COM	867229106	1921	33050	SH		Sole				33050
Suncor Energy	COM	867229106	308	5300	SH		Other				5300
Techne Corp	COM	878377100	217	2800	SH		Sole				2800
Trimble Navigation	COM	896239100	1166	32650	SH		Sole				32650
U S Bancorp New	COM	902973304	606	21738	SH		Sole				21738
U S Bancorp New	COM	902973304	835	29933	SH		Other				29933
Verizon Communications	COM	92343v104	166	4700	SH		Sole				4700
Verizon Communications	COM	92343v104	292	8242	SH		Other				8242
Vodaphone Group ADR New	COM	92857W209	265	9004	SH		Sole				9004
Walgreen Co	COM	931422109	949	29200	SH		Sole				29200
Walgreen Co	COM	931422109	205	6320	SH		Other				6320
Wal-Mart Stores	COM	931142103	405	7200	SH		Other				7200
Washington R.E.I.T.	COM	939653101	494	16460	SH		Sole				16460
Washington R.E.I.T.	COM	939653101	129	4300	SH		Other				4300
Weingarten Rlty	COM	948741103	409	13500	SH		Sole				13500
Wells Fargo	COM	949746101	249	10470	SH		Other				10470
Wm. Wrigley Jr Co	COM	982526105	224	2875	SH		Other				2875
Wyeth	COM	983024100	48	1000	SH		Sole				1000
Wyeth	COM	983024100	1906	39736	SH		Other				39736
XTO Energy Inc	COM	98385X106	1053	15375	SH		Sole				15375
XTO Energy Inc	COM	98385X106	180	2625	SH		Other				2625